Weiss was utterly mortified as she heard the sudden pop, followed by the clatter in the mostly quiet classroom. Not even the reduction in pressure around her belly was enough to distract from how deafeningly loud it seemed to her in her bout of panic. Professor Goodwitch's lecture came to a sudden stop, making Weiss go red as she realised that the professor had heard it too.
Silently, Weiss cursed her recently collapsed restraint when it came to food, as that had been, without a doubt, the cause of this current embarrassment. It had started innocently enough, with Weiss accepting Ruby and Yang's offers of extra snacks, just so that they would stop thinking of her as uptight. That then led to her indulging in various sweet and savoury snacks through her own initiative, with the quantities of snacks slowly rising over time, as did her weight. After that, her regular meals also increased in size, with larger portions and second servings, and, of course, she too increased in size.
It wasn't much of a change, and she was certainly not massive now, mostly thanks to how slim she had been beforehand and how active she had to be at Beacon. That didn't stop her from gaining a sizeable pillowy potbelly, round, soft, just big enough to start to rest on her lap and big enough to strain her uniform until her jacket button popped. That lap of hers had also gotten a share of the gains, thickening until her thigh gap was gone, making those thighs rub together whenever Weiss didn't spread her legs. Her rear had also plumped up a little bit, making most of her panties into thongs as they disappeared between her pudgy cheeks. Her chest hadn't seen much of the fat, only going up one or two cup sizes, only just enough for Weiss to notice, but not enough for Weiss to make upsizing her bras a priority. Beyond that, there had only been slight changes, slightly thicker arms, slightly less slender fingers, a slightly softer jawline. All of that, however, was being blown up to ludicrous proportions in Weiss' worried mind. In her mind, she may as well have been the size of a blimp.
As Professor Goodwitch shrugged off the sound and returned to her lecture, Weiss wasn't put at ease by the lack of reaction. With that button gone, Weiss knew that she wouldn't be able to do up her jacket, meaning the tight vest around her belly would have been on full display, a scarlet letter signifying Weiss' irresponsible gluttony, lack of restraint, and ignorance to her own growing body.
If there was ever a sign to do something about it, this was it, Weiss thought. She knew she needed to cut back on the snack, reduce her meal portions, get things back under control. She only hoped that what was left of her willpower would be enough to manage it.
[AN: Hey, apologies in advance for the notification spam, but I figured the folks that follow me here (who should probably be following me on AO3 or DeviantArt) would wanna see these. The prompt for this one was 'Clothing Damage', although I guess the damage was pretty minor in this one.]