A Normal Costume (Patreon)

This was just a fun idea I had for a continuation (or prequel, really) to the last captions. Picture property of ILuvDiapers/AdultBaby.xxx.

"I know who you are."

The words probably should have sounded menacing, though Tamara couldn't help but feel excited by them. "Really?" she smiled, spinning around, keeping her phone as steady as she could, then self-consciously adjusting the skirt of her costume as she got a few wolf whistles to remind her of just how short it was. "Are you a fan of my channel, or...?"

The woman standing behind her didn't look like who she imagined her viewers to be.... She knew there were some adults who tuned in, but her analytics told her it was mostly kids; this person was around her age, maybe a bit older. And, honestly, she knew it was silly, as few as she had, to expect any of them to show up here at all. She hadn't even announced she would be here, certain if she'd tried to set up some sort of meet-up she'd only end up disappointed, so it would be quite the coincidence. 

"Oh, sorry," Tamara blushed. "Did you mean this?" she gestured at her costume. After spending so long making it, and then seemingly just as long editing the video about how she'd done it for her channel, she was glad she wasn't totally unrecognizable, even from the back, before she'd turned around and let the woman see the emblem on her chest. She'd been to cons before, without cosplaying, but with how close this one was to Halloween, it felt like the perfect opportunity to give it a try... Then, as long as the costume wasn't so awful that she got laughed out of the building, she could wear it while she passed out candy, too. "Thanks! I really..."

"Silence," the woman ordered, sending a shiver up Tamara's spine. She sounded like she was in-character as a villain of some kind - and killing it - but, try as she might, she couldn't place who that would be. She was dressed pretty normally, in a nice, floral-print dress, without so much as a hint that there was anything evil lurking below the surface.

"I'm sorry," Tamara said again, hating that she was starting things off with so many apologies. All she'd wanted to do for the moment was shoot the introduction for her video, then go inside and get the lay of the land here at the convention before deciding what else she was going to try to film. There was a cosplay contest, and she knew that could provide a lot of content, but... There was no way she'd win with the first serious costume she'd ever made, right? "I'd love to play along, I just..."

"Such a helpful little girl you are," the woman smirked, reaching into her purse. A second later, the recording app on her phone vanished, replaced with a strange, swirling pattern... One that, try as she might, Tamara couldn't look away from, not until... "Uh-oh!" the woman cooed. "What happened?"

Tamara felt dazed, confused, not knowing what was going on... And then she followed the woman's gaze, glancing down at her legs. All at once, as she saw the yellow streams trickling down her thighs, she noticed the warmth there, and soaking into her panties... And realized her phone was taking video again, getting a perfect shot of her peeing herself.

"Wh-What?" she gasped, shaking her head. "I-I don't... I-I..." She couldn't even recall the last time she'd had an accident like this! And that definitely hadn't happened in public, surrounded by other con-goers streaming past her towards the entrance. She whimpered, pressing her thighs together, not knowing how she was going to handle this. She could still make a normal con video, without the cosplay... Except, she hadn't bothered to bring a change of clothes, so what was she going to wear?!

"Don't worry," the woman said, as if reading her mind. "I'd be happy to help, sweetie."

She knelt down, taking something out of her purse, spreading it out on the ground, giving it a pat. Tamara thought it was just a small, pink blanket until the impact, and the light crinkling noise it made. "Sit down right here," she ordered, Tamara's body obeying without a second thought. "I'll take this," the woman plucked the phone out of Tamara's hands, Tamara opening her mouth in protest, though no words managed to escape. "This is a good idea, I have to say," she patted Tamara on the head. "Let's see... You."

She picked a random guy out of the crowd with that last word, her tone stern and commanding. He turned uncertainly. "Yes, you... Come help me with this, please."

"Uh... Sure," he shrugged. "What is...?" he looked down at Tamara, who blushed, squirming on what she was almost positive was a changing pad, tugging at her skirt. "I-I don't really know anything about..."

"Just hold the camera," the woman snapped, the guy nodding, clearly intimidated by the authority dripping from her voice, despite how unassuming she was physically, how normal she appeared to be. "As for you, little one... I have the perfect thing for you..."

Tamara's eyes widened as the woman took something else out of her purse... Something much thicker and bulkier than the changing pad. The man holding the camera snickered, as if what was about to happen to her was funny. "N-No," Tamara shook her head. "I-I didn't mean it... I-I don't usually..."

"I'm sure you didn't, Kara," the woman knelt down, wielding the last word like a dagger, as if she thought that Tamara would be impressed, or scared, by the fact that she knew Supergirl's secret identity. "But things are about to change for you... Starting with your panties." She flipped up Tamara's skirt, exposing her soaked underwear, the guy chuckling again, a little more lasciviously. "You're not going to be wearing these anymore... Ever again."

"N-No!" Tamara whimpered, staring at the other object that had come from the woman's purse in fear, the implications clear. "Y-You can't!"

"I can't, huh?" the woman grinned. "We'll see about that." She slid the wet undies down Tamara's wiggling thighs, off her feet, dangling them in front of the mortified girl. "Do you want these in your mouth?" Tamara shook her head. "Then put your thumb in there instead, and don't make a sound until I tell you that you can... Or that's exactly what's going to happen."

The man with Tamara's phone wasn't finding this quite as amusing anymore, while Tamara anxiously slid her thumb between her lips and felt herself begin to suck automatically. "A-Are you sure this is...?" he glanced around, nervous that they were going to be caught, and he'd be blamed for what was happening.

"Shut up, or you're next," the woman threatened, unfolding the large, cloth bundle she'd taken from her purse, sliding it under Tamara's backside. "Don't worry," she tapped Tamara on the nose, "I'll use plenty of powder... I don't want you getting too much of a rash." Tamara groaned helplessly as the woman did as she promised, then pulled what there was now no questioning was a diaper up between her legs, pinning it in place, finishing it off with a pair of ruffle-bottomed plastic pants.

Or... Tamara thought that was the finish. "How adorable," the woman smirked. "But this just doesn't go with the rest of your outfit, does it?" she tugged at Tamara's costume shirt. "Don't worry... Mommy will fix that for you, too."

After being diapered out there on the sidewalk, sucking her thumb, it almost didn't register to Tamara when her top was stripped off, replaced with a lacy, pink and white mockery of itself, leaving her looking not like a young woman cosplaying as one of her favorite heroes, but a toddler who was playing dress-up. She whimpered, tugging at the plastic pants, listening to them rustle.

"Aww, are they too hot?" the woman teased, Tamara nodding - they were very different from the skimpy skirt and underwear she'd been wearing mere minutes earlier. "Well, too bad. You'd better get used to it. When I'm done with you, you won't remember a time when you were allowed to wear anything thinner than that, or how to use the bathroom in anything except your diapers... Much less that you used to be one of the most powerful superheroes in this dimension."

Tamara shook her head, trying to tell the woman that she was wrong, that of course Tamara didn't have powers, that she wasn't Supergirl... Supergirl was just a fictional character! But the woman took it as her futilely protesting her fate. "There's nothing you can do about it now," the woman pulled Tamara to her feet, the girl struggling to get used to the extra bulk between her thighs. "You're already mine." She stuffed the changing pad and baby powder back into her purse, leaving Tamara's costume crumpled on the ground, beside her sodden panties. "Make sure that video is seen by as many people as possible," she ordered the guy with Tamara's phone.

For a moment, Tamara thought he would take pity on her, and get her some help, or at the very least not show what had happened to her to anyone else... Then she the woman's hand move in her purse, saw his eyes glaze over the way she was certain hers had before her accident. "Yes, ma'am," he answered, and Tamara tried not to think about how, with her phone, he had access to her channel... 

"Come along, Kara," the woman took her by the hand, leading her against the flow of traffic, the girl meekly sucking her thumb and staring at her feet as she saw the people heading inside snickering and whispering about her, until they got to a private spot for the woman to open up a portal, pulling Tamara inside, and to her new life.

It didn't take Mommy much time, back in her own dimension, to realize her mistake, to see that her calculations had been off, and she'd gone to the wrong place, that 'Kara' wasn't just playing pretend when she insisted she didn't have any powers. By then, of course, it was already far too late for the girl. All things considered, it was almost impressive how long she'd lasted... Longer than some of the actual heroes had. Not that it had done her any good, in the end.

"Well," Mommy shrugged, looking at the precious girl, rolling around on her back, sucking her thumb, sippy cup in hand, without a care in the world. "You wanted to be a hero... This is what happens to them when they face Mommy."

Tamara burbled behind her thumb as Mommy patted her on the head. "Don't worry... I'll make sure to introduce you to the real Supergirl once she's ready. I have some plans for her... And by the time I'm done, she'll be just as 'powerful' as you. You'll practically be twins! Won't that be nice? Maybe, when I've had my fun, I'll make the two of you think that's what you are... Mommy's little twins. One who used to be Supergirl, and one who was in the wrong costume at the wrong time. And not even you two will be able to tell which was which... Would you like that?"

Tamara didn't understand what Mommy was saying, however, she nodded anyway. She could tell that was what Mommy wanted, and if Mommy was happy, so was she. "Good girl," Mommy smiled. "Just give me a week or two, and she'll be ready to meet her new sister. But first, I think you'd better go take a nap, so Mommy can catch her first. It might not be quite as easy as it was with you... I don't think it's going to be a problem, though. It never is." It was almost like they knew they belonged here, in her nursery, toddling around in diapers, helplessly filling them... She wasn't going to rest until that was where they all were. And, if this went well, and she really was able to bring in heroes from other dimensions, too... Well, it might be time to start thinking about expanding her nursery, just like 'Kara's' diaper was expanding as the girl obliviously drank from her sippy cup.