"Mom! Can we go shopping? None of my bras fit." Rachel Moss called
down the hall. A few rooms away, Kelly Moss tightened her lips. Her
younger sister was growing at a worrying rate, and it seemed likely that
within a year she would outpace Kelly's own dwindling growth. Examining
herself critically in the mirror, Kelly had to admit that there was not
much to complain about. Her 32D cups looked especially large on her slim
frame, but compared to her mother's 34FF cups they did not feel all that
big, and now that her little sister seemed to be taking after their
mother her fears of inadequacy only spiked.

"Ask your sister if she wants to come." replied Wendy Moss.

The door to Kelly's room burst open to frame Rachel's curvy figure.
The 14 year old looked like she was the same age as her 16 year old
sister, and Kelly could see now that her sister was just as busty
as she was. "Hey sis, you want to go shopping? My boobs just won't
stop growing." Rachel said. She knew that her growth bothered Kelly,
and was more than willing to take revenge for the times that her older
sister had waved her own development in Rachel's face. 

Not wanting to admit defeat, Kelly agreed, and soon the three of them
were speeding along the towards the mall. While she outwardly maintained
a brave face and fiddled around to find a pop station she was satisfied with,
Kelly was fuming on the inside. She kept sneaking glaces at Rachel's heavy
bust, becoming more and more annoyed at the way it spilled over the edge
of the C cup bra she was wearing.

It was while she was glancing at her sister that Kelly felt an odd pressure
in her chest. It only lasted a moment, and she might have imagined it. At
the same time, she noticed that Rachel's breasts were no longer pressed quite
so tightly against her bra. Before anyone could notice her acting oddly, Kelly
turned back to the radio and pressed the seek button again. When she looked back
at her sister, she felt the tugging sensation again. Rachel's breasts were now
a perfect fit for her bra, though Kelly noticed that her own bra was pinching.
Her memory skipped and she recalled two different pasts. In one Rachel had asked
for a shopping trip in order to buy a new bra, but in the second it was she who
had initiated the trip. She looked back at her sister again and felt the
pinching at her chest intensify while her sister's breasts deflated.

When they got to the store Wendy took Kelly over to be fitted. The saleslady
was busty herself, but Wendy made her look small, and Kelly was satisfied to
see that it was not just her mother who put the curvaceous woman to shame.
A part of Kelly was surprised to learn that she was a 32E now, but another part
just wondered how it had taken this long to notice.

After Kelly's fitting Rachel demanded to be measured. "Honey, you don't need new
bras." Wendy told her, but Rachel was insistent, so they waited while the
saleslady looped her tape around Rachel's body.

When Rachel learned that she was only a 32B she looked troubled,
"But. I have to be bigger than that."

"Honey, you are plenty big enough for a girl your age. Don't worry about size so
much." Replied Wendy.

Rachel looked mutinous the whole time that Kelly was trying on new bras. For her
part, Kelly was enjoying herself immensely. She took particular pleasure in asking
Rachel what she thought of whatever lacy garment she had just pulled over her
heavy breasts. In the end she walked out of the store with a half dozen sexy
new bras while her younger sister dragged her feet. Some of them were so daring
that Kelly was a little surprised that her mother had allowed her to get them,
but Wendy had just cocked an eyebrow at one of them and otherwise made no comment.

When they got home, Kelly went to her room to put away her new purchases, but
her sister burst in behind her. "You stole my boobs!" She said.

Kelly giggled, "That's absurd. You can't steal someone's boobs."

Rachel glared at her, "You were mad that my boobs were as big as yours so you
stole some of mine! Admit it."

Kelly rolled her eyes, "You're crazy."

Rachel just stared at her with violence in her eyes until Kelly said, "Although,
I must say, I do wear them better, don't I?"

"I'm telling mom!" Rachel yelled.

Kelly just laughed.

"Shut up!" Rachel was going ballistic.

Kelly cupped her breasts and gave them a playful bounce, giving her sister a
mocking leer.

"I hate you!" Rachel covered her ears to keep out the sound of Kelly's mirth.

Kelly stopped laughing, "Really Rachel, you have to listen to yourself. I mean
if I could steal your boobs, I could steal your ass too."

Rachel's hands flew from her ears to her butt, and to her horror she felt them
slowly inching closer together. Kelly grinned and rubbed her own ass as it expanded.
"Thanks sis! Say, I think I made a mistake in the store. This bra feels a little
tight."

Rachel could see the soft flesh spilling out over the edge of her older
sister's new bra. "Y-you're evil." She said and ran from the room, chased by
the sound of Kelly's laughter. She only made it half way down the hall before
the first sob wracked her now much smaller chest.

Kelly spent the next few weeks prancing around the house without much on, taking
a particular delight in showing off her curves around her younger sister.
What made the experience even worse for Rachel, is that the two sisters seemed
to be the only ones who could remember anything different. As far as their
parents were concerned, Kelly had been developing her curves for years,
while Rachel's little A-cups were all the younger girl had ever had. The further
something was from the two sisters at the time of Kelly's theft, the more it
seemed to have changed. It meant that while Rachel's C-cup bra had felt hollow
as she ran away from Kelly's cruel laughter, she had returned to her room to
find her draws full of A-cups. For her part, Kelly had been happy to find that
with the exception of the bra she was wearing, all of her purchases from the
store were now 32EE cups. It meant she was only two cup sizes smaller than
her mother.

At school, a similar transformation had occurred. Everyone seemed to remember
the new, curvier Kelly. The new curves seemed to have given her a substantial
popularity boost. Girls who had been on neutral terms with her, now went out
of their way to suck up. Kelly had always been sought after by the guys, but
now it hardly required any effort to wrap one around her finger.

Slowly, the new reality settled into a pattern of normalcy for the two sisters.
After a few months Rachel hardly believed her own fantastical memories. Kelly
had always gloatingly showed off her body around her flatter younger sister, so
it was no real confirmation of the events if she did so more now.

================================================================================

"Hey sis." Called Kelly as she walked though the door behind her mom. She was
returning from her second year of college and she was looking forward to
flaunting her curves around her flat younger sister, but to her surprise 
Rachel had gone though another growth spurt.

"Hey sis." Rachel was unable to keep a note of malice out of her voice. Her
body had continued to bloom long after most of her classmates stopped growing,
and a particularly strong growth spurt had recently caused her to outstrip her
mother in size. She had long since decided that her odd memories of Kelly
stealing her breasts were just the result of feverish teenage jealousy. She
still resented the way Kelly rubbed her more curvaceous body in her face, and
now it felt good to be the bigger sister. When she realized that Kelly would
be returning home soon, Rachel had gone into her room and tried to fit some of
Kelly's 34G's over her own breasts. She had known that her recent rapid growth
would prevent the large garments from fitting, but actually seeing her sister's
huge bra getting stretched out over her own massive breasts had felt good.

Kelly looked at her sister for a moment, and then stomped up to her room. A
smirk touched Rachel's lips.

For a few days, things were quite in the Moss home. Kelly seemed subdued,
almost defeated. Rachel may have flaunted her new curves a bit, but she
did not wave it in her sister's face the way that Kelly would have.

Things came to a head when Kelly walked into Rachel's room.
Rachel was reading a magazine, and she didn't look up.

"Hey sis." Kelly said. She had a manic gleam to her eye.

Rachel continued to flip idly through her magazine.

"Whatcha' readin'?" Kelly asked.

When Rachel brought her hand up to flip the next page her biceps
squeezed her heavy breasts together, but something felt off. Her bosom
was not as heavy as it ought to be. A feeling of dread oozed down her spine.
Not wanting to believe her own darkest fears, Rachel continued to ignore
her older sister. When she turned the next page, she could no longer ignore
what was happening. Her breasts were noticeably less massive than they had
been just moments before.

Rachel threw her magazine down on the bed next to her and looked up at
her older sister. Kelly's tank top was stretched tight across her boobs,
and as Rachel watched the gray fabric stretched thinner and thinner.
"No." Rachel said numbly.

"Oh, yes little sister." Kelly said, cupping her growing breasts. "You probably
thought it was your imagination that I stole your breasts. That was what? Four
years ago? We were so young, it must have been just a manifestation of your
jealousy. Well, I have some bad news for you, little sister. I really did
steal your boobs, and now I'm going to do it again, but this time I'm taking
even more."

Rachel knew she should be screaming and yelling, but instead she froze, unable
to say or do anything as Kelly stood over her with a swelling bosom. Kelly's
heavy breasts were soon spilling over the top and around the edges of her
34G-cup bra. She bit her lip and let out a small moan of pleasure, obviously
enjoying the sensation of growth a great deal. With a snap, the heavy-duty
clasp on the back of her bra gave way and her breasts leaped forward under
her tank. Thick nipples made large dents in the thin gray fabric of her shirt.
Each breast was the size of a cantaloupe now, and her chest just kept expanding.

Rachel could feel loose cloth around her breasts for the first time in ages.
She was now hardly even larger than average anymore. She found that she was
crying, tears streaming down the sides of her face. Kelly kept draining her
until she was flat as a board, and then she was just looking up at the image
that her older sister presented. The Moss women were no strangers to large
breasts, but Kelly's looked massive even for a Moss. Each breast was a bit
larger than her head, and they hung off her torso in huge teardrop shapes
that only emphasized their mass. The bottoms of her breasts stopped just
above her navel. They would have hung lower if it were not for their youthful
perkiness.

Rachel continued to sob while Kelly stood over her with a smirk on her face.
She started to cry harder when she felt her hips sink into the bed. Rachel
was almost as proud of her big bubble butt, as she was of her heavy breasts,
and apparently Kelly had noticed the way that Rachel had grown below the waist
as well. Kelly's ass pressed hard against the daisy dukes she was wearing.
After a moment she had to pop open the button in order to stay comfortable.
When Rachel's hips started drawing together, Kelly's shorts gave up the fight
completely and tore open along her hips, leaving her standing in a tiny
g-string.

Kelly's ultra curvy body stretched up and Rachel could feel her feet inching
up towards her. Tears streamed down Rachel's face as she watched her older
sister draw her height away. Apparently Rachel's curves weren't enough
for her malicious sister. Kelly wouldn't be happy until Rachel had the
body of a 10 year old boy. Finally, she stopped shrinking.

Rachel really thought the ordeal was over at that point, but she felt her
muscles softening all over her body, as Kelly's musculature became more
defined. Both Moss girls were quite athletic, so Kelly was now quite a bit
stronger than average. Rachel watched as Kelly's thick black hair grew even
thicker and glossier than it already was, hanging down her back in a dark, heavy
curtain. At the same time she felt her own hair thin, and finally
disappear. Kelly's lips became fuller and redder as Rachel felt her own
thin. Rachel felt her eyelashes disappear, and watched as her sister's
eyelashes became impossibly thick and long. Her sister's cheek bones
became more elegantly defined lending her a sophisticated glamour.
Finally, Kelly's blue eyes became even more vibrant, and Rachel's vision
dulled.

Kelly continued to look down at Rachel's sobbing form with a vicious grin
on her face, and Rachel was sure she was stealing other less visible attributes.
Finally, her mind grew fuzzy and she no longer remembered who or where she was.

Kelly walked back to her room with a sway in her generous hips, savoring the
new reality. She was back on top again. Once in her room she closed the door
and pealed her over stretched tank off her body. Examining herself in the mirror
she could not help but love what she saw. She had taken all of the beauty
from her younger sister, and it made for quite the package in combination
with the beauty she already possessed. Her new memories told a story of
delicious dominance. She remembered the way she had kept the whole school
hypnotized with her charms when she was in high school. She took a particular
pleasure in enchanting a boy that she knew one of the other girls wanted, only
to leave in broken hearted after a few weeks of flirtation.

Her taste for cuckolding other women had not waned when she went to college,
and she knew of at least ten relationships she had destroyed during undergrad
In only three cases did she actually do anything more sexual than aim her
hypnotic bosom and striking blue eyes at her target. Standing in front of
the mirror it was easy to see why men found her so irresistible. She was
glad that her memories of stealing boobs from Rachel had not been the
imaginings of an adolescent mind after all, but she was even happier that
she had realized she could steal other attributes.

Kelly cupped her massive breasts, enjoying the way her huge bosom made her
hands look like a child's. She pressed them together and grinned at herself
in the mirror. A slow turn allowed her to look at her jutting ass in profile,
and she found herself getting wet just looking at herself. She may have gone
a little overboard with the height she stole from Rachel, but her new memories
told her that standing six foot three in her bare feet did not make her any
less hypnotically sexy in the eyes of men. In fact, she suspected that her
height had something to do with the way she could turn a brash and confident
man into a submissive pet in a few short minutes. Along with her sleek muscles
and outrageous curves, Kelly's height made her an amazonian sex goddess.

Kelly lifted one of her impossibly long legs up until it was pointed vertically
right next to her. When she had stolen nine inches of height from her sister,
she had taken only three from the torso, but six from the legs. It made her
legs pillars of feminine muscle, and it meant that she now had to avoid pointing
her toes if she did not want to touch the ceiling of her room. She did not
feel a single bit of resistance from her pliable muscles, and she smirked in
satisfaction at the idea she had had of taking Rachel's flexibility. Her poor
sister was hardly able to move without stiffness, and Kelly could move her
body into more shapes than a contortionist with more grace than a ballet dancer.
Her balance had also gotten some recent improvements, so she flexed her calf
and lifted her heal a few centimeters off the ground. She stood like that for
minutes, not moving a muscle, content to marvel at her own strength and grace.

As she switched legs, she reflected on the best improvement of all. Kelly had
always been a smart girl. She got strait As all through high school and had
continued to do so though college, but after draining her equally sharp sister,
she had reached a whole new level. In the new reality, Kelly had graduated from
high school two years early and been offered a full ride merit based
scholarship by Harvard University after winning the math Olympiad and getting
published in The New Yorker twice. She had finished her undergraduate work
just as quickly as high school, graduating at the age of 18 and leaving a trail
of broken willed older boys after her. Now, two years later she was entering
business school after spending the intervening years turning the waitressing
tips she had accumulated during college into over ten million dollars on the
stock and bond market. The reason for her return home in the new reality was
to visit her poor sick sister in case she died while Kelly was in school.
Considering all the years of her life that Kelly had just stolen, she
thought that it was likely.

Kelly walked over to the suitcase which was lying on the ground at the foot
of her bed and pulled out a lacy plunge bra. She had had to pay a lot of
money for the garment. They made precious few 38N cup bras of any sort, and
getting sexy ones off the shelf was impossible. She had all of her clothing
custom made, and she had a particularly large budget for her bras. This green
number forced her breasts up and together, making her cleavage look even
more imposing than usual. A matching pair of panties soon followed.
Kelly paused to admire her dramatic figure in the mirror once more before
she pulled a fitted black silk blouse on. It was cut so that the pressure of
her breasts would force it open at the neck and display three or four inches of
dark cleavage. A tight dark blue pencil skirt followed. When she stepped into
a pair of four inch pumps she completed the sexy businesswoman look. She would
have applied makeup, but her new memories told her that there was little she
could do to improve her looks with face paint.