princesspottypants

The Perfect Bikini

Published: March 8th 2021, 3:00:05 pm

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A short story commission for an anonymous Patron.



"Why didn't I just put it in my carry-on?" Chelsea moaned. "It was way more valuable than this stupid homework junk!" For the plane trip to the beach house and and her college roommate, Alexis, were renting, she'd been so convinced she was going to get her assignments done, so she wouldn't have to worry about them the rest of the week... Only to spend the whole flight staring at her phone.


Alexis opened and closed her mouth, choosing not to say whatever had come to her mind. It wasn't surprising... Honestly, the surprise was that the girl was here at all. Usually, she went home for spring break, and Chelsea's other friends went to the beach. This year, the friends had decided to be responsible, stay closer to home to party, and Alexis, perhaps because it was her senior year, and the last chance she had, had agreed to come with Chelsea instead. "I'm going to go unpack. Let me know when you're done wallowing and want to go shopping."


"There's no point!" Chelsea called after her as she retreated to her own room. "The good stuff is going to be gone! You'll see!" Really, it was the bikini she was worried about... The rest of her clothes had been in the suitcase the airline lost, obviously, but that had been the perfect bikini, found after hours of searching every clothes store in the city for just the right thing, and now it was gone. There were plenty of shops that would sell bikinis here, sure; there was still no way she could truly replace what she'd lost, however.


She heard Alexis shut her door, something the girl no doubt wished she could do back at college. When they'd first been paired together back in freshman year, Chelsea had been positive they wouldn't last, and, if they didn't kill each other before then, they'd find someone else to live with the next year. Yet, here they were, creeping closer and closer to graduation, and still there.


After a few minutes, she got up out of bed, looking around at the room curiously. This was a nice place they'd gotten... Alexis had booked it, so she hadn't paid much attention to what it was like, assuming the girl would have found them something good. She'd never paid much attention in the past, either, leaving that to her other friends to figure out, so she hadn't been able to tell Alexis the name of the usual spot. That turned out to be a good thing... There were only the two of them, but the house was bigger, and they'd gotten it for cheaper.


She wasn't sure why she did it; she had basically nothing to unpack, since the airport had lost her main suitcase. All the times she'd come here, that had never happened, so she hadn't thought to play it safe, put an outfit or two in her carry-on, just in case, like she knew Alexis had. She'd used it mostly for her textbooks, lying to herself that she was going to get her assignments done on the plane so she wouldn't have to worry about them the rest of the week, and her phone, which she'd actually spent the majority of the flight scrolling through.


She went to the dresser anyway, opening up the drawers, admiring the empty spaces where she could have put her outfits. There was something voyeuristic about it, almost, wondering if perhaps the previous occupants had left something there for her to look at. And, sure enough, she was right... She giggled when she saw it, hands shooting up to her mouth, hardly able to believe it. Part of her wanted to turn, to go get Alexis to show her; another part was frozen in place, staring, the object looking less and less funny the longer she looked...


Her cheeks were red when she finally tore herself away, her whole body feeling warm as she shuffled out to the hallway, knocking on Alexis's door. "Hey, Lex," she said. "C-Can we go shopping now?"


She really was a good friend... She didn't complain about being interrupted, even though Chelsea could see the suitcase open on her bed, only half empty, when she opened the door. "If you're ready," she agreed, grabbing her purse. "Let's go!"


They were at a different part of the beach than usual, but everything was still close. Chelsea recognized the streets almost instantly, pulling Alexis along, into one of the shops she knew she'd been to before. They did have a decent variety of swimsuits available, and some of them were pretty nice, though none of them looked right. Chelsea didn't even want to try them on... Until she stumbled across the children's section.


"What do you think about this?" she asked, holding a top up. She didn't know why she asked Alexis, as if she would care, or Chelsea needed her approval. She'd known it was silly well before seeing the look on her roomie's face... It looked more like a sports bra than a bikini top, and there were cutesy little bows on the shoulder straps, giving them an even more juvenile air... And, worst of all, a picture of Dory was printed across the front. There was no doubt this was meant for a little girl, not a fully grown college girl like her.


"Cute," Alexis said charitably. "Are you gonna mess around all afternoon? I'd like to get to the grocery store, too, I'm getting hungry..."


Chelsea fidgeted, almost convinced she was being stupid, before shaking her head. "No, I'm serious," she told her. "I bet it would look great on me..."


Alexis shrugged. "What do I know? Do whatever you want... Are there bottoms to match?"


Chelsea didn't have to worry about that, and she already knew what she wanted, so, despite the weird looks she got from her friends, she bought it, along with an oversized tourist trap-y t-shirt to sleep in, and a few other things, feeling happy with her purchases as they went to get food. She almost couldn't wait to see her new swimsuit in full, but she decided to be nice and help in the kitchen first.


After they'd eaten and cleaned up, she retreated to her room, closing the door and digging through her shopping bag. She tried the top on first, looking at herself in the mirror, blushing. It was for kids, so it was a little small, and tight, and the design of it was large enough to cover all of her rather ample breasts, the combination doing the opposite of what she'd planned. Unlike what she'd hoped, her chest looked flatter than it had in years, and, with the high cut of the top that hid her cleavage completely, it wasn't sexy at all, certainly not the way the bikini she'd bought back home had. 


What had she been thinking?! She'd imagined something else entirely... Alexis was going to be so annoyed with her when she made her go back to the store again, but what choice did she have? This wasn't sexy at all!


She almost tore it off, angry at herself; after a moment, however, she went to the dresser. She might as well see the whole thing, she thought, not that she expected it to make a difference. She was halfway there already, after all... She knelt down, looking at the package, cheeks darkening again, almost stopping. These belonged to someone else... What if they wanted them back?


But they were probably in another state by now, and wouldn't need them for months, at least, until summer, and, by then, they could just buy a new pack. They wouldn't mind... She swallowed, hands reaching out for the plastic, clutching it, ripping it open...


The smell hit her immediately, taking her back in time. Hands shaking, she dug through the contents, looking for the right one... And, after a moment, there it was. She wondered, for a moment, if it would fit, but it slid up her legs, snapping into place perfectly. She gasped, knowing right away that it was perfect, even before she got to the mirror. The slight padding felt so good between her legs as she walked over, rubbing against her...


"Yes!" she squealed, jumping excitedly at the sight of her reflection. Sure enough, the Dory on the top matched the Dorys swimming on the swim diaper perfectly, making it look almost like a set... And she looked incredible in it. She didn't know how the swim diaper had done it, but her breasts were straining against the top now, struggling to get free, just the way she'd envisioned it, keeping her decent, though only barely. The swim diaper's extra padding made her ass look better than ever, and the combination of the two pieces was every bit as hot as she'd imagined. There was something almost perverse about it, seeing an adult like her, wearing things meant for a much smaller girl, her mature body nearly bursting out of it... 


"Oh, my God," she giggled. "I am totally getting laid this week..." She turned, getting a better look at her backside. "Like, every day!"


Except tonight, of course... It was too late to go to the beach, and Alexis had already made it clear she wanted to go to bed, and not to a club. Chelsea could have gone on her own, but maybe it was better to wait, to reveal her masterpiece in its proper surroundings, so everyone would get the full effect. She squirmed, one hand reaching down, pressing against the swim diaper, pushing it harder into herself, starting to rub... After a moment, though, she stopped, flustered, and went back to her bed. She should wait, save up this energy for tomorrow... As she writhed on her bed, however, hugging one of her pillows to her chest, somehow, it ended up moving downwards, between her legs... And, before she knew it, she was humping away...


It was hard to tell, for certain, if her diaper was wet from more than that the next morning, though it seemed like it. She didn't think too much of it, knowing there were other swim diapers in the pack she could use. She fished out another with Dory, cleaned herself up, and climbed into it, very nearly devolving into another masturbation session before flouncing to the kitchen.


"Ch-Chelsea?" Alexis was taken aback, obviously shocked at how well the thing she'd scoffed at worked for her roomie. "I-Is that you?"


"Duh," Chelsea rolled her eyes. "Come on, go get changed... I wanna get to the beach now!"


"I-Is everything okay?" Alexis asked, as delicately as she could. Everything was more than okay... Chelsea was feeling better than she had in years! Finally, she went and got changed, Chelsea almost rolling her eyes when she saw the dorky one-piece her roomie had brought along.


"Seriously? You have to let me give you a makeover while we're here!" she insisted.


Alexis eyed her. "W-We'll see," was the best Chelsea could get out of her. Chelsea was bouncing off the walls as Alexis packed, as if they were going miles away, instead of to the beach right out their back door, rushing out into the sand, ready for all the hot boys that were bound to be nearby. She left Alexis to set up their umbrella and towels, practically running to the first guy she saw, pausing only to readjust her boobs, which she could see were almost breaking free of the childish top, in all the right ways.


"Hey, there," she batted her eyelashes at him. "What are you up to today?"


He glanced down at her... And barely reacted. "Nothing much," he shrugged. "You have fun, okay?" He patted her on the head condescendingly before wandering off. 


What was wrong with him?! Maybe he already had a girlfriend he was really devoted to, or maybe he was gay... One of those had to be the explanation for why he hadn't seemed impressed by her at all. She had to know... She followed him over to his group of friends, waiting expectantly to see him kiss one of them; instead, they started up a game of volleyball.


Perfect! "Oh, can I play?" she giggled, hurrying over. "I'm pretty good at this..." She thrust her chest out, looking at all the cute boys, certain any of them would be happy to get with her.


"Uh, yeah..." one of them said uncertainly. "I'm not sure..."


It was mostly guys playing, though a couple girls were watching from the sidelines. One of those spoke up. "Go on, be nice." As if she was being nice... Like Chelsea couldn't steal her man, assuming it was one of these dudes. 


But Chelsea wasn't going to say no, however she could get in. She hurried to one side, grinning at the nearest half-naked boy... And almost getting hit in the head by the first ball that came her way. "Oops," she tried to laugh it off. "My bad!" Her teammates groaned, rolled their eyes. "I am good at this!" she promised, making sure to give a little bounce with each word, to show them why they should really want to keep her around. "Just wait! You'll see!"


Even concentrating, however, she couldn't quite manage to return any of the balls... Though there were plenty of chances for her to stretch, and bounce, and show off her body, which was good enough for her. The guys were starting to sweat, their abs glistening in the bright sunlight, distracting Chelsea more and more... It was no surprise when she began to feel warm herself, and a little wet...


She didn't think anyone else would know until one of the girls called for a break and walked over to her. "You're looking a little saggy there, sweetie," she said. "Maybe you ought to go get a change."


"Excuse me?" Chelsea stared up at her, surprised at how tall she looked. "Who do you think you are?"


To her surprise, the girl dared to reach down, grab the waistband of her swim diaper, and tug it up. Chelsea blushed, the padding definitely feeling warmer than she recalled, and heavier, almost like she'd peed her pants... "Run off and find your Mommy," the girl teased, sending her away with a pat on the backside. "I don't have any clean diapers for you."


She was jealous... That was all. She could see that Chelsea was starting to get through to the guys, and she wanted to get her away... Chelsea walked away, feeling the swim diaper squishing between her legs, the sensation turning her on more and more, reminding her of how amazing she looked... It was almost a waste, returning to Alexis.


"Chelsea, something is wrong," she tried to tell her. "Seriously..." Even she was impressed, Chelsea thought... She'd never seen her look this good. "Look!" she insisted, turning her phone around, showing Chelsea a picture of an adorable little toddler, wearing what looked an awful lot like the same thing she was, right down to the sagging swim diaper.


"That's funny," Chelsea chuckled. "You found someone else wearing my look! I totally pull it off better than her, though..."


"No, Chelsea..!" Alexis shook her head, stopping herself short. "I-I think we should go inside..."


"Sure, I could use a change," Chelsea shrugged. Before that, though, she had to admire herself in the mirror, then spend some more quality time with her pillow. By the time she was in a fresh swim diaper, Alexis was lying down in her bed, taking a nap... And Chelsea was coming up with an idea.


Alexis would have so much more fun on this trip if she loosened up... And a hotter swimsuit would do wonders for that. She knew she'd seen a Nemo top at the store that would match some of the other swim diapers in her pack... She'd promised to give the girl a makeover, after all... 


~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~


Alexis could tell right away that something was wrong. She could feel warm air on her stomach, which had definitely been covered when she went to sleep. She sat up, frowning, and looked down at herself, stomach churning at what she saw.


"Chelsea!" she yelled, gulping as she reached down, pawing at the swim diaper around her waist, blushing. What was going on?! She shook her head, horrified, glancing across the room at her mirror... Only to get an even bigger surprise there.


"Oh, my God," her eyes widened. She looked... amazing. She'd never really considered herself hot, but, somehow, what little breasts she had looked enormous in the child's bikini top she was now wearing... They were almost as big as Chelsea's! And the swim diaper... She blushed as her hand brushed against the padding, sending a shock through her body...


"Yeah?" Chelsea opened the door, and, to Alexis's surprise, instead of the little girl she'd seen her friend as that morning, she was absolutely gorgeous. No wonder she'd been so proud of her swimsuit... How had Alexis not been able to see it before?!


"Oh, my God," Alexis repeated with a giggle, bouncing on her bed, amused to see her chest bouncing as well, in a way it had been been able to do before. "We hafta go find some cute boys!" Chelsea nodded eagerly, taking her hand, the pair of them rushing off, blissfully unaware of the way the rest of the world saw them, and how futile their quest was going to be because of it.