"Alright, and..." Kaitlyn mumbled as she rapidly typed on the keyboard in front of her. "Done!" She smiled as she put the finishing touches on her mid-term. She hit print and stood, heading over to the printer in the silent library. 

As she waited patiently for the the 10 page essay to finish printing, she took a look around at the library. At one of the desks sat her friend Carly, her nose deep in a history book. Kaitlyn smirked. She picked up her papers and made her way over to the desk. Setting it on the desk, she poked Carly in the side. "How's it going over here, eh?"

The poke in the side brought Carly away from the world of Kenyan history and back to reality. Looking up at her friend, she wore an expression that spoke a thousand words. '... I'm getting there,' she complained, 'only a few more chapters.' She stuck her bottom lip out in exaggerated annoyance.

Then Carly's eye caught the short stack of papers in front of her. 'Ohh, I see you've finished your essay!' she mentioned, and felt a pang of jealousy t her friend's success. 

'You know what?' inquired Carly, 'since you're done and all... Would you mind heading over to the shelf behind us and finding a book that I need?' Putting on her best puppy-dog-eyes, she said, 'It'd be a great help.'

"God, you are so...dang...needy!" Kaitlyn joked, rocking Carly's chair back and forth lightly as she said it. She chuckled and nodded."Yeah, I got it." Kaitlyn headed over to the section. All sorts of old history books and weird spiritual and ritual novels filled the bookcases. Kaitlyn pulled out the one Carly needed, knowing which one she was looking for as Carly had mentioned the title many times before to her. 

Her eyes continued to pore over the section for a few seconds until she saw another, with a rather interesting title.

'Magic of the Body'. Kaitlyn scoffed as she pulled it out of the shelf, setting the one Carly needed aside. "Seriously? What is this...?" She opened it a few pages and saw only a strange language with no descriptions of what the "magic" actually did. Most of the pages in the rather thin spellbook were blank. For a spellbook, it looked rather unused. Hardback, large, and with a bright green cover nonetheless, it looked almost brand new, as if no one had touched it.

Kaitlyn brushed her red hair out of her eyes as she took a quick look through the book. The pages that did have words had pictures with human models with arrows pointing to certain places on the body. "Man, this is weird..." A mischievous smile crossed her face as she picked up the book, as well as the one Carly was looking for. She placed Carly's book on the table, then went to check out the one she had found.

She was so absorbed in her reading that it took a while for Carly to even notice that Kaitlyn had placed the book next to her. ‘Thanks,’ she absent-mindedly mumbled as Kaitlyn wandered off. Instantly, she was back to studying, and her face crumpled up in concentration. She leaned her head on her hand, letting her fingers run through her short, black hair as she moved closer to the text. As she moved, her bra felt a little itchy, as if it were chafing a bit more than usual. Carly mindlessly shifted a bra strap, which seemed to fix the problem.

She finished reading the page and, turning it over, she noticed that her dark blue t-shirt created more traction across her chest than she was used to. Frowning, Carly looked down to see what was causing a problem. She was shocked at what she saw.

‘Are they… bigger?’ she muttered to herself. To her, they seemed to be a little rounder and more pronounced on her chest. She drew her eyes away from them and quickly looked around the library. There were only a few people around, and most of them were busy studying. Taking that as the ‘all clear sign’, she brought her hands to her breasts to explore their size.

‘Ah!’ she yelped in surprise, perhaps a little too loudly, as she touched them. They were indeed bigger, but she could also feel them growing! She instantly retracted her hands and watched them. Her boobs were definitely swelling up, it was clearly visible now. They inched bigger before her very eyes, and she realized that she could even feel them growing. It felt like a heat from behind her breasts was forcing them larger and making them expand to new sizes. They grew into Carly’s bra cups, quickly overflowing them and spilling over the top.

‘What the hell’s happening?’ she whispered, watching her boobs grow with a look of concern. They began to pull her top’s fabric a bit tighter as they swelled into the D cup range. Finally, she snapped out of her puzzled daze and hunched her back to disguise her inflating tits. In a flash, she packed away her things and left her desk. She went looking for Kaitlyn, and found her almost immediately between some of the library’s shelves.

‘I think we should start heading back,’ said Carly, ‘I’m not feeling too g-‘

She stopped speaking mid-sentence when she saw what her friend was holding. She held open a large, bright green book with the title ‘Magic of the Body’. Immediately, Carly knew what was going on. ‘What did you do to me?’ she asked, although she didn’t seem too angry about her situation. 

Without waiting for an answer, Carly lunged forward and snatched the book from Kaitlyn’s hands. Her swelling tits wobbled around with the motion, pushing the bra to breaking point as they reached the next cup size. 

‘Your turn!’ taunted Carly with a cheeky glint in her auburn eyes. She then backed slowly away, before breaking into a bouncy jog and rounding a corner. Her voice could be heard reading some of the strange language from the spell book.

Just as Carly rounded the corner out of sight, Kaitlyn could already feel a pulse entering her body slowly.

"Crap!" She took a step forward and paused, her legs shaking from the experience going through her body. Her boobs were tingling, slightly shaking from some sort of force circulating throughout them 'Had to be the same one didn't it..." She feared what may happen, for she didn't fully understand what it did when she read it herself. She collected herself the best she could and began to jog after Carly, who couldn't have gotten too far from the library. 

As she jogged, she could feel her boobs jiggling more and more with every step that hit the asphalt, as centimeter after centimeter was added onto her bust. Slowly but surely, her collar stretched outwards and revealed slightly more of her blossoming bosom. They had gone from her modest B cups to a now noticeable C cup as she rounded the block, seeing her friend struggling to keep her jog up. She gained on her, her breasts wobbling and bobbing up and down, every smack against herself sent ripples of euphoria across her body. "Dammit dammit dammit..." Kaitlyn cursed under her breath as she tried to keep up the pace, slowly but surely catching up to Carly.

Finally, she got up to her, and tackled her to the grass near the sidewalk. They both laid there for a moment, Kaitlyn's ballooning mams swelling against Carly's back as they reached D cups, their growth seeming to slow at this point, reaching their stopping point. 

"Why the hell did you do that?" Kaitlyn sat up and observed her new grapefruit sized breasts. "I read things off of that book on accident, I didn’t know what it was going to do..." She stood and brushed off her shirt,a accidentally smacking her over-sensitive boobs in the process and letting out a soft moan. "Not like I knew what that book is anyway. Just seemed cool. I wanted to see if I could pronounce some of the things in it. I'm sorry Carly..." Her friend remained facing away from her. Kaitlyn reached out to her shoulder.

'Carly...?"

Carly remained silent for a few moments, refusing to turn around. After some time thinking about how to phrase the next sentence without sounding too panicked, she finally spoke up.

'Kaitlyn... They're not stopping...' she said in a hushed tone. She spun around, still in her seated position. The size of her breasts was considerably larger than when she had left the library, and Carly watched as they grew even larger on her chest.

A tear opened up along her top's seam at the side as her boobs grew to be a G cup. Carly wore an expression of disbelief and worry all in one as she watched them inch out. They pressed tightly into her restrictive top, and her nipples could be seen poking out into the material. Her bra has snapped during her run, and was now clinging loosely to the bottoms of her boobs Their curves were clearly outlined by the skin-tight fabric, and Carly sighed with pleasure as they became more restrained.

'Oh god, this has to stop! They're getting to big!' screamed Carly all of a sudden. 'Kaitlyn, please do something! Help me!'

Kaitlyn ogled her friend for a bit, in shock and confusion. Why had they not stopped on her? They had stopped just a few moments ago for Kaitlyn and yet...Carly's kept on going. Not wanting to think about it for too long, she grabbed the book from the ground and opened it to the page she was on before.

The picture showed a female body, anatomical, as if it was a drawn dummy. To the side of it was an arrow pointing up, and to the side of the arrow were the mysterious words. Kaitlyn flipped through the book some and saw another image, of the same image, but instead of an up arrow, it pointed down. 

"Well, I hope this works..." Kaitlyn muttered as she began to read the spell out loud to her friend. Carly went wide eyed and looked at her as the words left Kaitlyn's lips. 

She suddenly felt a change. The tightness across her chest subsided, and the warmth in her breasts died down.

Carly breathed a sigh of relief as she saw her boobs begin to shrink back down to a more manageable size. Her tortured top loosened around them as they reduced in size. They passed back through the cup sizes, E, D, C... They kept on shrinking, and, to Carly's surprise, they reduced to past her original size an kept on going until she was completely flat-chested.

'Thank god,' breathed Carly in relief, rubbing her hands over her curve-less chest. 'Thank you Kaitlyn!' she cried out, lunging at her with a hug. Carly noticed that Kaitlyn's breasts felt way bigger than she was used to as they pressed into her own body.

'So... err... sorry about running off and, you know, doing that to you,' she said, pointing to Kaitlyn's boobs, 'I guess it was a heat of the moment kind of thing. But that book? Just what exactly is it? If you ask me, I think we should take it back to see what it is and just what it can do. If you know what I mean.' She looked up at Kaitlyn and flashed a playful smile. 

They began to walk to Carly's house, Kaitlyn nervous clutching the book in her hands, pressing it against her swollen bosom.

"Uh...I dunno Carly...do you think this is a good idea? I mean...it kinda got out of hand for you..." They eventually arrived at Carly's house after a short, silent walk. Going into the bedroom and shutting the door, Carly placed the book on her bed and flipped through it, Kaitlyn standing nervously near the edge of the bed.

"Um...seriously, I think we should take that back to the library. Why do you even want to mess with it anyway? It hit you worse than it did me." Kaitlyn saw a sly smile cross Carly's face. Her heart sank as she thought of what Carly may be planning. 

Carly finally spoke, only it wasn't in English. She read the strange language once more, having randomly chosen a page. As she finished reading, she sat back on her bed and waited for the effects to take place.

She couldn't feel anything happening, and looked herself over for any sign of change. There was none.

'Aw, it's not working,' she said, pouting in disappointment. She looked up to her friend, as if to try and get some sympathy. However, it seemed like Kaitlyn had a more pressing matter to attend to.

Kaitlyn abruptly stood from the bed, clutching her backside 

"Crap, which one did you read Carly?!" She turned her head to the side and looked, seeing her butt slowly swell out from her. 'Seriously?!" Kaitlyn groaned as her jean shorts began to strain against her ever-growing booty. It soon got very sensitive, the touch that Kaitlyn gave it becoming very pleasurable. "Ooooohhh..." Moaning as her behind became as large as two bowling balls, she felt flesh oozing out from the leg holes slowly. Her face turning a deep shade of pink, she snatched the book from the bed and flipped to a random page. 

"Let's see how you like it!" She found one similar to before, the figure with an up arrow, except the arrow was much larger. She smirked and read it off. 

'Hey, no! I didn't mean for it to affect you!' stammered Carly, a little worried that she was no longer in control.

Then it hit her. She felt a great build up of energy within her, surging up with increasing pressure. 'Mmmm,' Carly moaned, closing her eyes as the energy found its outlet.

Her breasts started to swell up again, only faster this time. Carly felt them balloon up underneath her top, filling it out swiftly. In a matter of seconds, they were back to her usual B-cup size, but they didn't stop there.

She cupped her breasts as they expanded through the cup sizes. They swelled against her hands, pushing them further away from her body as they reached the size of melons. She moaned as pleasure began to course through her body. Forgetting that her friend was around, she shamelessly squeezed them and let out a sigh of bliss.

'Oohhhh,' she cooed as the material of her top grew strained yet again. The tear down the side began to widen as her tits grew past the size that they had attained during her last growth. They were now growing into the H cup range, and she came to the realization that they were getting huge. However, she was enjoying it so much that she didn't even mind about how big they were getting.

Carly looked up from her large, inflating breasts. Upon seeing her friend, she gasped.

'Oh god, Kaitlyn!' she called out between moans. The sight of her was a shock to Carly.

Kaitlyn leaned forward onto the bed, her expanding rump waggling out from behind her as she looked through the spellbook. 

"Cmon...cmon...gotta be something..." Her behind had swollen up to the size of two medium sized beach balls, and her jean shorts had ridden up to hide almost nothing, most of her flesh up for show. Her face twisted up as she felt something pinch into her, the feeling being mildly painful and sensual all at once. "Nooo...not that..."

*SHRRIIIIIP*

Kaitlyn felt her panties make a slow, gradual tear as they finally tore in two. Kaitlyn instantly turned a deep shade of red and looked back at her continuously growing backside. "Dammit!" Her head turned back to the book as she flipped through it faster, finding something that may work. Her eyes lit up when she saw a certain image, one of a model with a large rear.

She read it off quick, the strange language passing her lips. She closed her eyes and waited hopefully...as the sensations slowly dimmed and slowed, her rear settling on watermelon-sized. She let out a sigh.

"There should be something to revert this in the book..." She gazed at the book and saw the medley of spells and models and her eyes lit up. A smile crossed her face as she saw Carly on the bed, her breasts still growing and getting quite large.

"You wanted to have some fun, Carly?" Kaitlyn's grin turned almost devilish as she picked up the book and backed away from the bed, seeing several images and spells to read off. "Well, let's have some fun then..." She directed her gaze at Carly and began reading.

Carly knelt up on the bed as Kaitlyn backed away. She set to groping her growing breasts again, moaning as she squeezed her swelling curves. She felt them inching out even further into her hands as she caressed them. They strained her top tight as they grew to be the size of basketballs. The tops of them swelled up over her restrictive neckline, and the bottoms of them began to peak out underneath her top as it rode up her flat stomach.

Carly heard Kaitlyn reading from the book again, and, to her own surprise, she found that she was looking forward to more growth.

Kaitlyn’s words brought energy with them, and Carly could feel a tingly sensation spread over her butt. ‘Mmm, my ass,’ she moaned sensuously before taking a hand from her breast and using it to rub her rear through her jeans. She felt it begin to grow larger, bulging out behind her as she knelt Its firm curve pushed against her hand as she rubbed it. Her ass slowly filled out her jeans and then became squeezed inside. The pressure exerted on her boobs and her butt at the same time sent quivers of warm pleasure all around her body.

‘Ohhhh, it feels so good,’ she breathed, her eyes fluttering as she groped her swelling curves. Over her own moans, Carly noticed that Kaitlyn was still reading. She was about to question what was going to happen next when it made itself readily apparent to her.

Carly felt her tits swelling up faster and becoming firmer. She had to steady herself by placing her hand on the wall next to the bed she was kneeling on as the new sensation forced its way into her body. Her boobs lurched forward, spreading into her top swiftly and squeezing around it. The fabric tore almost instantaneously as her breasts’ growth picked up speed and ferocity. Her giant tits bounced out, hanging down to her navel and still growing.

What came next made Carly whimper loudly. Milk erupted from her firm boobs quite forcefully, spraying onto the bed in front of her. Like geysers, they sprayed continuously. Carly found the sensations to be too much and her body plummeted into orgasm. Her whole body spasmed and she screamed in bliss. All the while, Carly’s tits continued to grow and spray their contents.

Carly flopped forwards onto the bed as her orgasm subsided, panting. Her tits took her weight and soaked her bed. Her ass protruded from behind her and swelled even larger, now the size of small beach balls.

‘Kaitlyn… what did you do?!’ she said, finding herself in quite a situation. She looked up at her friend before lunging at her. Her great breasts sprayed milk all over the bed and also along Kaitlyn’s side. Carly snatched the book from Kaitlyn’s hands once again.

She immediately set to reading multiple spells, hoping any of them would reverse or stop the growth before it was too late. Little did she know, all she was doing was reading far too many expansion spells to count…

"NO!" Kaitlyn lunged over and knocked the book out of Carly's possession before she could read off any more spells. Stumbling back onto the floor onto her huge ass, she looked down at her body, fearing what may come next.

"We just...gotta stop for now Carly, ok? We don't know what we're do-OHHH!" Her D cup breasts lunged forward a full cup. Kaitlyn went silent and looked down with a worried look on her face then looked back up at Carly.

Pressure built up in her breasts and she began to moan. Softly at first, then louder and harder as the pressure got more and more intense. "Make it stooooop~" she cooed as she brought her hands up to them. As soon as her fingers made contact, she felt a strong orgasm hit her, as well as her breasts jumping up to an F cup "Nooooohhh..." She looked over at the book as she felt the pressure building again and her breasts getting firmer and perkier. Her nipples became very prominent through her white tank top. Her cleavage crept upwards through the collar as her bra dug into her breasts. She stifled more moans, not wanting to let anything more out. 

Gripping into the carpet, she felt another push happening. She kept her hands away from her breasts as they grumbled. Becoming rounder and more shapely, she felt an urge to squeeze them, grope them, to release. She held up her hands from the carpet, then put them back down, her whole body starting to shake. "I don't want to, no, please no..." Her hands slowly made their way to her chest as she shook her head. Out of nowhere, her hands zoomed in on target, gripping hard onto the two orbs of flesh and she orgasmed on the spot, her whole body shuddering hard as she let out a long moan of relief. It turned to fear as she felt her breasts wiggling underneath her fingers.

"Oh God...there they go..." She clenched her eyes tight as they ballooned two more cup sizes, now the size of her head. She was panting, sweating, and delirious. "Gotta stop this...before it gets...out of hand" She was so out of it, she forgot that Carly was right next to her. She crawled to the book by the bed and looked through it, trying to find anything that would work. She read off one with a down arrow, then an up arrow, then down, then up, listing off one after the other in a delirious haze. "Gotta be one of these..."

Carly, meanwhile, sat back and watched, unable to move as various changes began to occur...

Carly felt a variety of warming and cooling feelings spread over her, each one seemingly flowing into one other. She was on her knees again, but lying on top of her massive breasts. Snatching the book from her friend just before had made her stumble and fall into this strange position. She didn’t quite know what to expect next so looked she at her body expectantly. Her breasts and her ass had slowed down in their growth slightly, and Carly was quite glad of it considering how large they both looked. She breathed a sigh of relief, her giant, milky tits rolling up and down on the carpet in front of her.

Then came the next surprise. The conflicting cold and warm feelings were replaced with an overpowering one. This time, warmth crashed into her, quickly spreading over every inch of her body. Kaitlyn must have read off a very powerful spell, thought Carly. She began to worry; she was already big enough!

First, she noticed her butt had resumed growing. Only this time, it was a lot quicker. Carly moaned as her sizable ass swelled over the top of her tight jeans. The blue denim pressed into her cheeks with some force, attempting to hold them back. ‘Oh god, I need to get this off!’ moaned Carly, realizing how tight her jeans had become. She reached behind her and tried to slip her hands down the back of them, but it was simply too tight. She noticed how good it felt to run her hands over her swelling rump though, and set to groping her ass. She began to pant as her arousal built yet again.

She was so caught up in massaging her bubble butt that she didn’t even realize when her boobs began to grow again. They lurched forwards another couple of inches and she moaned. They had stopped spraying milk now, and Carly assumed that Kaitlyn had said a reversal spell. Carly felt them spread out underneath her quickly, and this drew her hands’ attention away from her ass and to her tits. One touch alerted her to how sensitive they had become, and she sighed and closed her eyes in bliss. She felt them swelling up, pushing into her groping hands. As they got bigger, they lifted her gradually off the floor. 

As her tits grew to be two feet in diameter, her jeans tore at the seams. Her ass bulged out through the gaps and the sudden shift in mass brought her a spike in pleasure. Carly felt herself teeter on the edge of another orgasm. She quickly squeezed her massive boobs, which brought the release she needed. She moaned over and over as her body quivered on top of her tits. Her inflated ass stuck out behind her, pushing over her jeans. 

She came down from her orgasm and realized the situation she was in. Below her, two massive tits swelled. Behind her, her gigantic butt expanded ever larger. She had had enough of this! 

Carly stumbled to her feet, her great mammaries swaying from side to side. She waddled over to the book that Kaitlyn was reading from, her rear bubbling even further through the gaps in her jeans. Then, she unsteadily picked up the book and proceeded to toss it straight out of the window!

It fell to the floor outside and Carly was just happy to not be seeing it anymore. 

Then it dawned on her just how stupid she had been. 

She hadn’t stopped growing. Her tits were still getting larger and heavier, and her ass was doing the same. She looked down at Kaitlyn and saw that she wasn’t the only one still undergoing changes. 

"Carly! What did you do that for?!" Kaitlyn shouted as she went over to the window. It had fallen far away from where she could reach, and she brought herself back from the window. "Damn, gotta go get it-" Kaitlyn attempted to go to the door, but fell to her knees when the pleasure hit her breasts once more. "Unnhh...they're not done yet? Why...oooohhhh..." 

She felt them plumping up again, getting perky like before. Nipples hardening and
becoming quite clear through her top. "Just...stop! Please!" They still hadn't begun growing, but she continued to feel them tingle. Pressure and pleasure kept rising by the second, Kaitlyn made another attempt to stand, bumping her still very large ass into the bed behind her. She toppled forward, managing to land on her hands and keep her breasts from danger. "Gotta be careful...gotta not touch...in any way..." She got to her feet slowly, feeling her breasts get rounder and stretch her shirt as they bulged out through the top, making more and more cleavage as they peeked out from the collar. 

"OK, we just gotta think clearer...we can't keep rushing back and forth and reading when we have no idea what will happen..." She looked over at Carly, still expanding and much larger than her. "Now...I'm gonna go out there and get the book back. When I get back, I'll look close and see what will help us get back to-uh....oooohhhh..." Kaitlyn couldn't finish explaining, her boobs were now emitting a new sensation. She felt something sloshing around, and it was getting closer and closer to her nipples. "Ohh...what is this? What is...OH GOD!" She yelped out when her breasts began to spurt milk from her nipples. At first it was a slow trickle, but it progressed quickly into a decent stream. “Crap, nononono!” She put her hands over her nipples to stop the milk from going everywhere.

She then realized what she had done.

Flinging her hands back into the air, the milk had stopped altogether. Kaitlyn felt her breasts wobbling, the pressure and feeling mounting higher and higher. “Uh oh..I...” It built up more and more, like a spring winding up, getting more and more tight until...

* SHRIIP! *

Her tank top tore in two as her breasts ballooned forwards into J cups, the size of bowling balls. “UNNNHHH!” The pressure released, the pleasure shooting from her breasts all throughout her body, sending her into a deep and powerful orgasm. She fell to her knees, gasping for air, sweating, heaving. “Oh God...no..its not STOPPI-” Another surge of tit flesh burst into her bosom, sending her up to an L cup, as large as medicine balls. Kaitlyn was absolutely shaking under the intense pleasure she felt coursing through her body, and she felt it building up again for another round...

“Carly...we gotta...get the book. Its our only-OOOHHHH!” Once again they swelled up, blowing past M cups into N, racking her with another orgasm. It felt so good to her, but it was becoming too much. Her breasts were now the size of medium sized beach balls, but the surges had stopped, and all she could feel now was the pressure and pleasure winding up again. “Ok...just gotta keep my hands off them...at all costs...” She stood, ready to make her way outside.

“Carly...you with me...?” 

'Mmm,' moaned Carly, partially in agreement and partially due to the pleasure she was experiencing. Still stood at the window, her body continued its transformation. The bottoms of her big boobs swelled past her hips and upper thighs as they grew. Her ass bulged out behind her even more every second.

She began to stumble forwards towards the exit. Her breasts sloshed around with her movement and her butt sprang up and down after every step. The feeling of her expanding assets made was driving her wild. All she wanted to do was stop and enjoy them. She bit her lip as she tried to restrain herself.

'Sorry about that... I wasn't thinking straight,' said Carly as she approached Kaitlyn. 'Let's go get that book.' It was obvious that all she wanted to do was grab her swelling flesh and enjoy the sensations. However, even Carly knew that this could go too far, no matter how much she was enjoying it.

Carly reached the door and opened it with a struggle. Her breasts got in the way slightly, and were still getting bigger. As she tried to walk through the doorway, she met a problem. The sides of her tits bumped into the frame and her soft flesh was pressed into momentarily before she was pushed back. The pinpoint pressure on her giant boobs sparked orgasmic potential within her. She felt the pleasure shoot around her body swiftly, and it was so strong that her legs grew weak.

She leaned on the wall beside her and slid down it, moaning. She went all the way to the bottom until her inflated ass hit the floor. She straightened her legs out to allow room for her boobs, and they continued to swell over them. Now sitting up against the wall, she lost herself to the sensations.

Her hands dug into her boobs again as they expanded even further. She could feel them grow over her knees and continue on. The sides of them flowed over her legs and hit the carpet underneath her. Carly rested her head on the wall as she let out moan after moan. Her hands went to work on supplying pleasure to her expanding bust.

She began to squirm under her breasts as an orgasm struck her. Her eyes fluttered and she whimpered in delight. Her ass slowly lifter her higher from the ground as it carried on growing. Her jeans began to tear even more as her butt got insanely large.

'Oh god!' cried Carly as another orgasm began. She looked up at Kaitlyn, pleasure apparent on her face. 'Kaitlyn... I need, ohhhh, I need you to go and get the... Book,' she moaned, 'I can't stand up... They're too, mmm, heavy and I can't control myself.'

She set back to groping herself again as her tits expanded over her shins. Carly knew that her fate was now in Kaitlyn's hands. 

'Alright, well...I guess its only fair cuz I got us into this..." Kaitlyn took one step out of the door and immediately felt the pressure in her bowling ball sized mams growing again and she whimpered. "God, this isn't gonna be easy..." Her wide hips brushed the doorway, rubbing against the frame, the feeling giving her a wave of pleasure. "Ooohh...keep it together Kate..." 

Soon she was out of the door and walking down the hall to the living room. So far so good. The pressure continued to build as she made her way past the living room and to the front door. She opened the front door, made her way down the steps off her patio, jiggling and bouncing the whole way, until she spotted the book. Luckily, no neighbors were outside and no passersby were there to see her shirtless state. 'why didn't I put a shirt on?' she thought mindlessly. Too much was on her mind, she wasn't thinking straight. The pressure continued to build until she felt it almost to the point releasing.

"Shoot! Gotta get this and get inside!" She bent over, her plump tits reaching downwards as she picked up the spell book. She felt her nipples graze her knees as she bent, and she stood again. She went back inside, closing the door behind her. She sighed in relief, thankful to see the book in a fine condition.

...but she couldn’t help but notice that the pressure was releasing...

"What th-" Suddenly, her growth exploded forward, knocking her back onto her large, round ass. She stared, flabbergasted at her now large beach ball sized breasts. 'When did I...?" She recalled when her breasts lightly brushed against her legs. "Oh God, you gotta be kidding m-" They ballooned another few inches, now the size of watermelons. "Oh man, this is ridiculous...I'm getting" Another few inches to car tires. 

"CARLY! YOU GOTTA GET OUT HERE FAST!" Kaitlyn tried to move, but the pleasure and added weight of her bergoining breasts made her legs go weak. "I need...help...!" She looked into the book, looking at spells uncertainly.

"What should I do...? Should I read more...? Does Carly need to read them...? I have no idea which one works, I was just getting lucky before..." She felt another push and buildup as her breasts pushed out another few inches again, getting even more massive than before. "They aren't...stopping this time...CARLY! Hurry!"

‘Gimme a second,’ called out Carly after hearing her friend’s call for help. From her seated position underneath her gigantic breasts, she began to shift. Her boobs wobbled as her legs moved out from beneath them and Carly moaned, biting her lip. She swung her hips out to the side and slid her legs out from under her tits so that she was kneeling again, only this time her boobs filled the space between her and the floor, even when she was kneeling up tall.

‘I’m going to try and move to you…’ shouted Carly, eager to rush to Kaitlyn’s aid. She stood up onto her feet, having to bend down under her enormous breasts’ weight. Her swollen ass stuck out behind her and Carly gasped as her jeans began to tear. She couldn’t believe it, but she was still growing. At that moment, she felt her boobs swelling up again and spreading over the carpet. ‘No! Got to hurry up… ohhhh,’ she moaned as pleasure filled her again.

She grabbed the sides of her tits and her hands sank into the soft flesh. Her eyes rolled in her head in response as the ecstasy swelled up within her. She kept her mind focused though, determined to sort out the problem that she had helped to begin. 

She heaved backwards, lowering her ballooning butt into a squatting position in order to get some momentum. After a few seconds, Carly managed to lift her massive breasts from the floor. She moaned and cooed as the pleasure increased further still. ‘Don’t lose control…’ she muttered to herself as her tits swelled toward the floor and her ass expanded behind her. 

In a slightly slouched position, she turned to the doorway again. She staggered towards it, her three-foot-in-diameter breasts proving to be very heavy. This time, she prepared herself for the pleasurable impact with the door frame. Her breasts pressed against it again and Carly’s lips tightened as she fought back a squeal of pleasure. She turned her body to the side and slid her right breast through the door first. She moaned as the pressure squeezed in on it from both sides. Then she went ahead with her left, managing to successfully get her upper half through the doorway. 

Then she shifted herself back to the front and began to walk through. From her bent over position, her tits swelled down past her shins and neared the floor again. Her ass grazed the sides of the doorway as she left the room, and Carly could feel it growing even bigger.

‘I’m coming!’ she yelled down the hallway, and she could hear Kaitlyn’s moaning from the next room. Carly stumbled her way down the hall, using the wall for support and keeping her swaying, expanding breasts in check using her free hand. Occasionally, her butt would rub up against the wall and she would let out a moan, having to stop and endure the pleasure before continuing. 

She came to the end of the hall and entered the living room. She rounded the corner and saw Kaitlyn. Carly gasped at the sight of her expanding friend and lost her balance momentarily. Her giant boobs dragged her forwards and she fell on top of them. They jiggled underneath her and held her a full four feet off the ground, so her legs were straight. Her butt protruded behind her, bulging through her tattered jeans. The pleasure was immeasurable and Carly could feel another orgasm coming on.

Before it struck, she managed to say, ‘Kate… tell me… ohhhh… how can we stop this?’ Just before Carly plunged into an earth-shattering orgasm, she looked up at her friend. Kaitlyn was wearing a look of worry, and it was obvious why.

Kaitlyn's breasts had already plumped up to almost match Carly in size. She panted as she felt wave after wave hit her, the spurts getting closer and closer together each time one hit.

"Oohh...jeez, this feels...ohhhh..." Kaitlyn lifted the book weakly and opened it, showing it to Carly. "The only way to stop this is if we find a correct reversal spell...I think the only one...oohhh...that will really work for our breasts is one we can use on each other..." Kaitlyn glanced at Carly’s still ripening bottom. "And I know there is one you can read to make your...uh...backside stop..." Kaitlyn saw Carly flush slightly redder than she already was.

As Kaitlyn looked through the book, she found one that looked about right: a red hexagon, which she assumed was a stop sign, next to a model with big boobs. "Well, hopefully this does the trick..." Kaitlyn read it and looked at her friend. All the while her boobs bounced and sloshed their way up, inch by inch, bringing out another moan from her when she was no longer focusing on the book. She waited, hoping to see a reaction from Carly... 

Carly moaned as her orgasm finally subsided. Her body fell limp atop her giant boobs. She lay still, panting after experiencing the intense sensations. It was only after a few moments that she realized that she wasn't being lifted higher anymore. She breathed a sigh of relief as she noticed that her breasts had stopped getting bigger.

However, Carly didn't notice the other feeling in her boobs. They were still filling with milk from a previous spell, only they had been growing so fast that they didn't fill before. Now that they had stopped growing, the pressure was starting to build up and soon the milk would have nowhere to go but out. On top of that, Carly's ass was still swelling out behind her, now the size of two large beach balls.

'Thanks Kaitlyn,' she said, 'that was getting a bit out of hand!' She looked up at her friend, which only caused her to gasp in shock. She was still growing, and quickly.

'Kate!' yelled Carly, alarm clear in her voice. 'Quick, hold the book up so I can read the spell!'

Kaitlyn responded sluggishly. Her body labored by the still billowing size of her breasts. Now reaching the diameter of hula hoops, the spilled over her legs and spread across the floor. In an orgasmic haze, Kaitlyn lifted her head and the book and handed it over to Carly. Unfortunately, she had lost the page she was on.

"I...can't even focus anymore...I'm sorry Carly...you're gonna have to find it..." Kaitlyn slipped in and out of her orgasmic stupor as she finally put the book in Carly's hands.

"Its up to you Carly..." 

Carly, with the book in hand, knelt down. Her massive butt came into contact with her heels and her enormous tits spread out in front of her. She could barely see over them anymore, they had grown so large.

She brought the book to her side and began frantically flipping through the pages, trying to find a spell to help Kaitlyn out. Just then, she felt a change in her breasts. 'Oh what now?!' cried Carly, picking up the pace at which she looked for Kaitlyn's reversal spell.

Her boobs began to feel tight. Pressure built within them and they started to get firmer and perkier. Carly moaned as sensual feelings spread across her tits while they distended. Without getting any bigger, they were filling up with vast quantities of milk.

'Gotta hurry up,' said Carly through gritted teeth. Pleasure pulsed through her body as her boobs filled, and it kept on building up. Then, suddenly, her breasts released. A torrent of milk erupted from her swollen mammaries, spraying across the floor. A cry of pure bliss came from Carly's mouth and she dropped the book.

Her lactating boobs felt amazing, and she could barely control herself. Her hands shot to the sides of her curves and pressed inwards. The stream of milk increased in strength as she massaged the milk out of herself.

'Oh god, I'm filling too fast,' said Carly, worried as she felt her boobs grow even tighter. The worry swiftly went away as a powerful orgasm crept up on her. She tensed up, moaning loudly and riding out the pleasure.

Amid the orgasm, her thoughts shifted back to Kaitlyn momentarily. Carly had forgotten that she needed to help her, getting carried away with her massive, lactating boobs.

Looking down, Carly found the book. It was open on a page that had a diagram of a woman with the breasts highlighted. There was a small, downwards-facing arrow next to the figure. 'I guess... Ohhh... This will have to do,' moaned Carly, still cumming.

She read the spell aloud and then went back to milking herself. All she could do was hope she had said the right spell.

Kaitlyn sat for a moment, still panting heavily. Years felt as if they had passed, although it had only been a few minutes, an almost endless orgasm hitting her in waves. But it soon slowed, and came to end. She sat there, exhausted, barely conscious, until she looked at her breasts. Swollen to the size of small yoga balls, she squeezed them to make sure they were no longer expanding. Her eyes lit up when she had her question answered.

"They...they stopped! Carly you did i-" Kaitlyn stopped short, her eyes almost popping out of her head when she saw the state Carly was in. Her breasts, although they had stopped growing, were now incredibly tight-looking and round. Milk was starting to rush from her nipples as she twisted them with her fingers. Kaitlyn also saw her ass still bulging out from her, now impossibly large. She looked to the side and found the book. Picking it up, she flipped through it, trying to find the right spells. Seeing one with a cup of milk crossed out in red, she read that one. She found another, the image having a model with her bottom highlighted and a down arrow. After reading that, she stared at her friend, hoping to see good results.

"How...how you feeling Carly?" 

Milk sprayed all over the room in front of Carly as Kaitlyn finished reading the two spells. Her tits were so swollen and full of milk that she could feel her skin growing even tighter. Carly pinched and squeezed at her nipples and pressed into the sides of her beanbag sized tits in order to milk herself. Pleasure erupted around her body in response as her nipples forcefully shot load after load of milk out.

Carly moaned as the sensations built up. However, she noticed that her skin wasn't as tight any more. She breathed a sigh of relief and took her hands away from her boobs as she realized that had stopped filling with milk. The spell had worked.

She looked back behind her and was met with the sight of her gigantic butt. In her preoccupation with milking her tight boobs, Carly hadn't even noticed her jeans rip off. Her ass stuck out a good few feet behind her, naked in all its glory. She watched for a moment and saw no further movement, indicating that the growth had stopped. She gave it a squeeze and bit her lip, perhaps enjoying it a little too much.

Carly looked over at Kaitlyn's expanded self. 'Thanks, who knows how bad that would have gotten if you didn't take action,' she said, leaning forwards onto her boobs again. She relaxed completely, thinking she may as well enjoy it before using spells to fix the states that they were both in.

After a moment's pause, Carly said, '...So, wanna see if we can outgrow the room?' She winked playfully, and it was uncertain whether she was joking or actually serious.

She then went back to sprawling out across her tits, smiling, which sort of answered the question.