So my girlfriend had left me, she just became disinterested I guess. Couldn't figure what else it could be. So I was down at the twelve bells cafe, drowning my sorrows in a mug of hot coffee. So I didn't drink ok? Bite me! Well anyway I was sat by the counter as I drank my coffee and read the paper, trying unsuccessfully to forget our little conversation before she'd stormed out of the place. When I ran out of the good old caffine potion I turned to try and grab the waiter in order to get a refill. In doing so I accidentally elbowed this woman in the stomach. Well she was gorgeous. Five foot six (taller than me!) tanned complexion with ebony black hair and sultry eyes. She was clad in a slimline red dress about her size eight body, which showed off a touch of her perhaps C cup bosom out the front. It was one of those quite plain ones with just buttons down the front and the simplest kind of stitching. Of course being a gentleman I profusely apologised and offered to pay for whatever she was getting, which after a thoughtful glance at me decided upon a large glass of mineral water. "So what's your name?" I asked her, and she replied with a demure smile "Cassy, or Cassandra, yours?" "Jim, Nice name by the way" "Thanks, its Greek, where I come from" "Greece eh? You lived there?" "Until I was fifteen" We chatted until her drink came which I paid for as promised. She tipped me a wink as the waiter handed it to her, saying something about us being even. Then she surprised me by inviting me back to her table. Throughout our little conversation I'd been struggling to keep looking at her eyes, like I said, she was utterly gorgeous. I accepted her offer and gathered my stuff, well I'd just been given the elbow. A chat would distract me and was just friendly right? right? Her table was tucked away to one side, along the wall away from the windows. I was kind of glad about that, for I'd noticed a few guys in here staring at her butt after she'd gone by and it meant they'd quickly forget if they weren't staring at her all the time. We chatted a while longer as she started on that pint glass of mineral water I'd bought her, sipping it between sentences as we talked. We talked mostly about what we did for jobs and where we lived. I was in an apartment down in the suburbs, she also had an apartment but it was in the heart of town. However her job made me feel more at home, a database consultant whereas I was a programmer. She just laughed when I said I couldn't picture her stuck behind a computer. It was about this point I began to notice that red dress was looking a little snug on her now. I could see her cleverage clearly, whereas before it only showed when she leaned forward. I quickly diverted my eyes but looking back I think she caught me. Looking back I realise she was distinctly more aware of my actions than I assumed. But for now though I still thought she was just Cassandra, and she'd just caught me sneaking a peek. I carried on smoothly, not even realising although a certain devilish light came to her eyes about then and I just carried on talking, oblivious. It was probably about then she took her first proper big drink and well...results showed. She'd downed about a sixth of the glass by now and her bosom was looking visibly fuller, a small D perhaps. I hadn't made the connection yet, and after stealing another glance I was momentarily stupefied. She just smiled at my expression and in my confused silence she began to chatter on about her three cats Amie Sophia and Orlando. I was of course trying to puzzle out where I'd made the mistake about her figure behind my attentive smile and it was about then she took another drink, knocking it down to about three quarters full. I happened to glance down at this moment, taking advantage of her tilted head to double check the details. That's when I saw it. A slight 'wobble' in her tits, like a filling water balloon! I buried my face in my hands for a moment. I was a tit man through and through but this was stupid. I was overwrought, work was tough at the moment and my girlfriend had just left me. I looked up again, nope they were still there, a fine D by now. She just smiled, as if to say 'have you figured it out yet?' before she rapped out the question as to if I had any pets myself. I was caught of guard, and uttered some gibberish about my goldfish while I fought once more to keep my eyes level. She took another drink of the glass, taking it down to about six tenths now, a good gulp just in case I was still confused. I saw it this time all right. Her bosom jiggled gently as it swelled within her red dress, not by much, maybe half an inch or thereabouts. It was enough to seize my attention though and she picked up upon this. Conversation came to an abrupt end, it was her floor now. Damn that dress was tight by now, the buttons held it firmly together but her boobs were rolling slightly over the edges of it and I could now see the faint imprint of her nipples at the apex of her bosom. I sure as hell couldn't see those when I'd met her. Our eyes met briefly, my (increasingly exited) disbelief apparently amusing her. It was no good, I had lost my voice and I was beginning to get a hard on in anticipation. I had to be dreaming, or something, this wasn't real...was it? That hard on felt pretty real as it took up the slack of my slacks and boxers. Cassandra seemed to judge that I was ready and willing and she tipped back her head, taking another drink. She was slower this time, far slower. Stringing it out for both our enjoyment I assume. I could almost visualise the water trickling down her throat, filling those damn fine tits of hers even more than they were already. When she hit just under half a glass she relaxed back and set it down. The view was glorious, the rollover at the top edge of her dress was more prominent now, as were her nipples. I was staring unhindered now and I wagered I could see large, dark areolas through the material of that dress. The buttons were still unrelenting though, even as widely spaced. The bastards must have been sewn on well. I looked up again at her face as she jiggled her now DD's lightly, and then blew me a kiss just for effect before she picked up the glass again. My hard on hit new heights as she lifted that glass to her lips again and began to drink. I had to catch myself to keep from drooling onto the table as she took the water down teasingly slowly to a solid third before she let up to give me another breather. I had been watching carefully this time and at last those buttons were beginning to show a little tension, slight O shaped gaps beginning to appear between them although not much could be seen except the fabric behind the buttons beginning to fold inwards under the strain. Were those things firming up too? I imagined they would be, filled with water beyond almost double their original size. They were becoming pretty damn huge, I had to fumble with my slacks to stop my dick from getting painful. The pressure at the top of the dress was beginning to push open the 'v' between the top edge and the first button and those nipples, well there was no missing 'em now. Another grin was passed between us, only this time I managed to return it. Then Cassandra downed half the remaining water very quickly and my jaw sagged. No way would the dress take it! Her huge jugs became even huger, stretching the dress vertically a bit now as well as horizontally. I thought her nipples would slash their way into the open so long and thick they were growing. I thought a button somewhere would just tear off or slide from its hole. But the dress held, miraculously. I could have sworn I heard stitching groaning, threatening to unravel. My hard on was beginning to reach bursting point. If she didn't let up I'd be shuffling home with my feet turned inwards. The gaping holes between the buttons showed the edges of those magnificent near E tits as well as portions of her gorgeous ivory skin. Cassandra had half lowered the glass I realised, peering over the top of it to observe my reaction, including my desperate fidgeting beneath the table. Her face then lit up with the brightest, most mischievous smile I had ever seen, and she lifted the glass to her lips again. I knew it, she was going for the finale but was she really mad enough to burst buttons in a cafe like this? My tongue lolled as the moisture hit her lips and she began to drink, this time very, very slowly. Those tits of hers looked as big and tight as footballs already and that dress was going to pop, it had to. Yet nothing seemed to happen for a moment, and so I watched her two angry nipples as they fought against the fabric, backed up by areola that were getting to be four or five inches across. Her bust jiggled again but this time as she shifted in her seat. I almost ducked in fear of a button going off. My hard on was giving me the pleasant agony of unreleased pleasure as I watched for some sign of her bustiness increasing further. For a moment I wondered if she was just teasing me and not actually drinking but pretending to. Then I realised it was happening, millimetre by millimetre. The material tightened beyond what it seemed capable of and I imagined her skin doing the same as those boobs grew even bigger. Something had to give, I was very afraid it would be my cock. The water was over half gone now, and still that dress held out. I guessed there was enough left for another half an inch or so as she slowly but steadily approached F size. Gotta pop, gotta pop.. I chanted in my brain, although I wasn't sure by now if I was thinking of her dress or my hard on by this point. I just wanted relief now but I was a mile from home in a public place! Quarter of an inch now, no *way* would those buttons hold for that much. They were screaming on their threads with it all. Her boobs still overflowed the top copiously now, it was no secret she was jammed into a dress several sizes too small for her. Her skin was squeezed white where the dress was and it must have been painful but she still drank that last little bit. I gaped in disbelief as she set the empty glass down in front of me with a triumphant grin. A little burp escaped her a moment later, and that did it. The third button down burst it's seams and popped off, rattling onto the tabletop in front of me. I picked it up in shock, and almost blew my wad then when it dawned on me what had happened. Cassandra leant forwards, defying the laws of material stresses as she inspected the button in my hand. I could see the bottom inside quarters of her boobs, including the edges of her areolas. "That one's broken.." she sighed with a little smile. "You can keep that.." She stood up and collected her coat, which she wrapped protectively about her shoulders, hiding anything unusual about her by tucking it around herself. Then she stepped around the table and kissed my cheek, before waving goodbye and calling. "same time tomorrow?" She left me with a still raging hard on which I would spend an hour purging later and a broken button, as well as a distinctly unsettled grasp on reality. I checked my watch with a shaking hand, my girlfriend had left me only half an hour ago!