Laura went back to the 3D image of herself. After examining herself a little more, she began to randomly zoom in and out different sections on her body. As she came across „chest“ though, she paused. Laura looked at the close-up image of her plain torso, and the two pitiful measurements the „Bust“-button displayed: One in numbers, and one displaying her current cup-size. As she put her thumb on the „A-cup“ symbol, a tablet appeared on the screen, showing the whole alphabet from A to Z.
A bit hesitant, Laura pressed „C“, and then „Save changes“ on the bottom. The iPhone loaded a moment, before going back to the 3D image of herself. Despite before however the model sported a small, but noticeable bulge on her chest, straining her green T-shirt a little. 'C-cups', she thought 'Not really large, but still rather decent - probably what most women would like to have.'
Laura continued to stare at her altered image for a while, smiling a little. With each second that passed however the corners of her mouth sank a little lower, and she began to tap nervously on her iPhone. She zoomed in on her chest again, and called up the menu for cup-sizes. With a shaking thumb, she pressed two times on the „D“, and quickly clicked on „Save changes“.
A few seconds later and an even bustier version of Laura appeared on the screen. Her breasts now were a lot more dominant, and stretched her top so far for her belly to look out. „There, double D!“, she exclaimed „The same size as Vanessa! That should do it.“
But it didn’t even take a minute before she was back at the cup-size-tablet, this time putting her finger on the „E”. When the image of herself appeared, she could see her chest was a little larger than before, and her shirt had wandered slightly higher. „E-cup, a slight hunch above Vanessa. Something I’d absolutely be happy with.”
Laura looked at her blown-up 3D model for a moment. „Ah, screw it!”, she finally said, changing her cup-size to double H. The iPhone needed a little longer to load this time. As the image of herself appeared again, it showed Laura with breasts larger than her head, covering the sight on most of her upper-body. Her shirt had risen up to her bosom, showing a massive under-cleavage, while the fabric lay skin-tight on her body.
Gulping a little, Laura turned the 3D model around. From the side, her breasts were twice as wide as the rest of her body, although her shirt constrained them a little. Even from the back view she could clearly see her vast bustline. Laura tilted the image a little further, looking at the rift between her boobs from below, before going back to the normal view.
Clicking on some other regions she made a few more changes to herself – a slightly slimmer waist, some more curves on her lower end – before placing her thumb above the „Apply”-button. „Nothing will happen”, she assured herself „What do I expect to happen anyway?” She could barely hide her excitement though when she put her thumb on the touchscreen, watching as another loading screen popped up.
For a while, Laura sat in her room, impatiently waiting for something to happen. When the loading symbol disappeared though and she still looked the same, the hope inside her gradually faded. „I’m so stupid”, she sighed, putting her iPhone on the table. „Did I really think there was an app that could-?”
Suddenly, a strong sensation surged through the young woman. Feeling uncomfortable on her chair Laura quickly stood up, her whole body prickling from the inside. Glancing down on herself Laura’s eyes nearly popped out when she saw a hump forming beneath her shirt, stretching the fabric a little. “Oh my god!”, she screamed, almost falling unconscious from the shock. “Oh my god, oh my god, oh my god! It works! It really, REALLY works!”
While she felt the soft mounds filling out her shirt she noticed the other changes she applied also started to take effect: Slowly and steadily Laura’s waist was diminishing, her new slimness soon causing her pants to sink down a litte. Each inch she lost on her waist seemed to be added to her hips as they were flaring out, stopping her falling trousers. At the same time her legs were also gaining a bit more sex appeal, making her a bit taller in the process. Achieving a quite feminine curvature, Laura also felt her inconspicuous buttocks blowing up inside her pants. The feeling of her firm rump pressing against the fabric teased Laura to pinch herself, but another sensation occupied her attention already.
Growing to grapefruit-size, her breasts steadily conquered the space inside her shirt. Laura noticed not only their size was rising, but they were also getting more sensitive. Feeling urges she never had before Laura blushed, moaning softly as her bosom filled out her top. And they filled it out nicely, cause alongside sensitivity and size, the firmness of her meat buns was increasing as well, just like her butt’s. Growing to full spheres her breasts slightly fell on her body, but kept a solid stand despite the lack of a bra. Her shirt was rising up her belly just like the iPhone picture had shown it, Laura fighting her arousal down a little as she felt a great event was about to come.
While she watched her breasts grow out from her body, she also took a quick look at what was going on beyond it: The process on her lower end had mainly stopped, leaving Laura with a form that stood in no shame to her sister’s. Her pants were in a little misery, as on one side they were too small for her new waist, which was resting perfectly on the line between “slim” and “meager”. At the same time however, they were also too small for her endowed hips and butt, their struggle not to break emphasising Laura’s new curves quite nicely. Her pants had still sunken deep enough to uncover a part of her white panties, and as it was stretching her undergarments a little, also a small excerpt of her firm butt.
Smiling at herself Laura then eagerly she noticed her breasts were entering the DD-area. “Come one”, she whispered, shaking her fists in excitement. Her firm mounds took their time however, slowly straining her top as they grew larger. Laura thought an eternity had passed before the moment finally arrived she had been waiting for. “Yes! YES!” Laughing like a maniac she began to jump up and down, the jiggling of her bosom causing her top to stretch even more. “I am bigger than my sister! I am FINALLY bigger than Vanessa!”
Not startled by their owner’s behaviour, her breasts continued to expand. Overcome by pleasure and joy the young woman shivered in arousal, each additional pound of body mass increasing her excitement. The weight of her milkjugs began to drag on Laura’s shoulders, though its firmness still lacked competition, even from lower weight-classes. Her entire belly had been uncovered by then, and her shirt was losing the contact to her body as her breasts dragged it up. The free room was quickly filled out though, and by the time they reached the size of her head her breasts had taken up the whole shirt, pushing its fabric to the limits.
Laura felt her shirt being pulled over her sensitive bosom, revealing it in all its growing glory. She knew if she opened her mouth now she would moan, so she quietly watched the last phase of her growth, her sight on the ground steadily diminishing. Leaving G-cups behind they blew up to volleyball-size, though the tightness of her skirt now hid their true size a little. The squeeze inside the fabric was additionally tearing her willpower, Laura really having trouble not to fall into a loud ecstasy from the sensations her balloon bust caused.
When her body was a perfect duplicate of her 3D model the expansion finally ended, leaving Laura with an impossibly proportioned body. With wide eyes the young woman gazed down on herself, carefully putting her hands on her breasts. Part of her hands were touching its bare parts, and as she came into contact with her skin, Laura was really struggling to keep herself still. ‘Does Vanessa have those problems, too?’, she wondered. She refused to let go of her monstrous bust however, giggling a little. “My god, I can’t believe this is real. Please let it be real! And if this is a dream – let me never wake up!”
Looking past her vast bustline Laura then spotted her iPhone, lying peacefully on the table. She was already darn happy with what it had done for her, but also knew she had just scratched on its possibilities. With such a powerful device in hands, what will she do next?
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