Sierra squirmed nervously on the bench, munching on her pretzel, and glancing down at the shopping bag between her feet every few seconds. Was she really going to do this? It seemed so silly now, but she'd already bought them. It would be a waste not to do anything with them.

Of course, she could still wear them, even if she ignored her original plan, as long as she was careful. That wasn't the point, though. As much as she wanted to tuck the bag away into the cute, monkey backpack she'd found at the thrift store the other day, that wasn't the point, either. She wanted the bag to be seen, no matter how bashful that would usually have made her.

Once she left the mall, she'd have to hide the bag again. Her landlady definitely wouldn't approve of what was inside. If she saw them, in fact, she'd probably finally have the excuse to use one of those big, wooden spoons in her kitchen on Sierra's backside, the thought of which left Sierra blushing and squirming on the bench.

The woman's house was so big, and so nice, and the rent had been so cheap! She seemed nice, and normal, enough when Sierra had gone to look at the room she was renting out, too. She just wished she'd read the contract more carefully before she'd signed it. Now, she couldn't move out within the next year without paying a bigger fee than she could afford. Worse than that, however, when the woman had spotted a wet spot in Sierra's panties in the laundry, she'd taken all her big girl underwear away, and replaced them with cloth training panties, which Sierra had to submit to a check of whenever she left, or returned to, the house, and there was nothing she could do about it. She knew the woman was just waiting for an opportunity to use the stacks of big, fluffy cloth diapers she'd found in the closet of her room, and the locking diaper pins, and plastic pants.

There was no way that woman would approve of any underwear Sierra could have bought at Victoria's Secret, especially when she'd forbidden her from buying herself any real panties until she was satisfied that she was properly trained, so she wouldn't leak all over her furniture. And she was already going to be upset at Sierra's return panty inspection.

Sierra had just been so nervous, thinking about this plan, working it all out in her mind, convincing herself to do it, that she hadn't noticed she had to pee until it was too late. She did make it to the bathroom, but by the time she did, she was already a bit soggy, and she knew the landlady would notice. That was why she'd decided to wear her shortalls, despite how childish they were, with their little heart-shaped pockets.

"I'm sorry!" she'd shrugged as she hurried for the door. "I don't have time to get undressed, the bus is about to leave!"

She had a feeling the outfit would end up being taken away once she put it in with the other laundry that night, so she couldn't pull that trick again. For now, however, it had worked, and delayed the inevitable discovery for a little while. She really wasn't that wet. Surely, the woman wouldn't put her in diapers for this!

She was still feeling anxious anyway, and had been the whole bus ride there, and, especially, her trip into Victoria's Secret. The people who worked there always seemed so tall, and mature, and she was terrified they'd know about her trainers, somehow, and kick her out of the store, or turn her away when she tried to buy something from them.

They hadn't, of course, and she was able to leave with her bag, and the panties inside, but it was just her luck that he wasn't there yet, when she passed by the store. She was sure he worked today, since he always had before, so his shift must just not have started yet.

She wasn't sure why she cared so much, honestly. He was cute, yes, and she always felt so nervous around him. She'd talked to him a few times, passing by his store, and she felt like she always came off as a silly little kid, although he never made fun of her for it, or seemed like he wanted her to leave him alone. For her, that felt like a victory.

It was too bad, then, that, the last time she'd seen him, she was pretty sure he'd seen her training panties. She'd turned to leave, and tripped over her own feet, almost falling flat on her face before she caught herself. Her skirt hadn't felt particularly short until then, as she scurried off, terrified, in her flailing, it had flown up and shown off her trainers.

She couldn't have him thinking, or knowing, that she was wearing training panties! She didn't want to bring it up to him in conversation, obviously, in case he hadn't seen, or recognized, them, and she didn't want to just flash her undies at him like a weirdo. So, the bag was the best option she could think of. She'd just go to Victoria's Secret, buy some underwear, then casually be carrying the bag the next time she saw him. She could have bought anything there for the bag, but, in case he happened to catch a glimpse of what was inside, she'd decided it had to really be panties. Once he saw that, he'd know she could, and did, wear real underwear, and the trainers he might have seen had been a trick of the light, or a one-time thing.

All she had to do now was wait for him to show up so she could strike up a casual conversation, and see her with the bag, as long as she didn't chicken out. After everything she'd done to get to this point, surely she wouldn't, no matter how ridiculous it all seemed. She finished off her pretzel, wiping her hands on her napkin and bending over the grab the bag so she could throw away her trash and go find something else to distract herself with while she waited. She stood, heading for the trash can, only to be forced to a stop.

She frowned, glancing down. Was she stuck on something? It felt like it, but she wasn't sure what it could be. She turned, feeling something starting to wrap around her even before she saw the girl standing there behind her, holding a leash.

She was tall, and Sierra felt confident thinking she would have seemed that way to just about everyone, not just her, to whom almost everyone looked tall. She was almost a full foot and a half taller than Sierra, with long, red hair, and an incredible body that the rather revealing cheerleader's uniform she was wearing showed off perfectly. Immediately, Sierra, in her childish shortalls, and the damp training panties beneath it, felt like a kid in front of her, despite guessing that she was probably only a year or two older than Sierra herself, even before she heard the patronizing tone in her voice.

"Hey, there, sweetie," she cooed. "What are you doing out here all alone?"

"O-Oh, I'm not..." Sierra stammered, before shaking her head. "I-I mean, I am alone, but..." She frowned, tracing the leash in the girl's hands to her backpack, where it swung slightly with every nervous movement. "Wh-What's this for?"

"You're the one who was wearing a harness," the cheerleader teased gently. "It's just a good thing I had a leash with me. I wouldn't want you running off before I figured out where you belong."

"No, it's just..." Sierra tried to protest, turning around, see that there was, in fact, a small, metal ring on the backpack, clearly meant for something like the leash that had been clipped to it. She hadn't noticed that at all when she'd bought it. She'd just thought it looked cute.

"What's your name?" the cheerleader asked.

Sierra had been mistaken for a kid many times, and she was never sure what the correct etiquette was in that situation. She didn't like it, but she also didn't want to get into an argument over it, as she had plenty of times, especially with someone who looked like she was more than strong enough to do anything she wanted to Sierra. Things had already gone further than Sierra would have liked, with the leash, but maybe if she played up the innocent, confused kid role a little, the girl would take pity on her and let her go.

"Sierra," she said, blushing and staring down at her feet. "What's yours?"

"That's a sweet name," the girl smiled. "Mine is Haley. Now, tell me, Sierra, why is someone our age wearing a diaper?"

Sierra's eyes widened as she stared up at the girl. She'd actually known she was an adult, too? Then why had she put the leash on her?! And how had she known about the trainers?! The bulge wasn't that bad under the shortalls, was it? She'd stared at herself in the mirror a long time, trying to convince herself of that.

"Well?" Haley asked. "You're, what, a year or two younger than me? You're definitely old enough to be in big girl panties, like me. So why are you wearing a diaper?"

"Stop saying that!" Sierra hissed, blushing. "It isn't a diaper! A-And I don't need it, I just..."

"Oh, you're right," Haley nodded. "It isn't think enough to be a diaper." Before Sierra could stop her, she bent over, sliding her hand up the leg of Sierra's shortalls, giving the trainers a poke. "If you don't need it, though, why is it wet?"

"Stop that!" Sierra squealed, squirming, trying to get the girl's hands away from her. "What do you think you're doing?!"

"Oh, come on, Sierra," Haley shook her head. "Someone your age and still wetting her pants is clearly just too lazy to use the potty, or desperate for attention. Lucky for you, I have the solution to both possibilities right here." She reached into her purse with a grin, pulling out what Sierra recognized instantly as a big, puffy, pink diaper.

"No!" Sierra shook her head desperately. "Haley, no!"

"Oh, yes," Haley nodded, kneeling down in front of the nervous little witch, reaching over and tightening the shoulder straps on what she'd thought was just a backpack until there was no way she could just slip it off, reaching back to grab the waist strap, which Sierra had just left hanging, thinking it was unnecessary, closing it around her with an ominous click. "It's a good thing I'm always prepared, isn't it? Now, come on, pipsqueak." She gave the leash a tug, giving Sierra no choice but to stumble after her.

"Haley, please!" Sierra begged. "You can't do this!"

Haley stopped, turning, towering over the other girl as she stared down at her. "Who's going to stop me?" she demanded. "You? If I wanted to, I could pick you up, carry you back over to that bench, and change you there, instead of going into the bathroom. Is that what you want?"

Sierra gulped, shaking her head, the cheerleader's muscles leaving little doubt her threat was possible. If she only had her wand with her, she could teach this bully a lesson, but she hadn't been able to find it since moving into her new room. She suspected her landlady had found it somehow, and either was sensitive to magic enough to know to keep it away from Sierra, or just mistook it as a random stick, and thrown it out somewhere into the large forest that butted up against her backyard, where there were countless other, far less powerful, sticks covering the ground.

"Well?" Haley said. "I'm waiting. What is it that you want, Sierra?"

Sierra knew her real choice wasn't an option, so she mumbled, "The bathroom."

"No, Sierra," Haley told her. "Say it all. What do you want me to do?"

Sierra blushed, looking around at the people bustling around. "I want you to leave me alone!" she whined.

"Oh, look at this," Haley reached into her purse again, this time showing off a soaker pad. "Every time you complain, I'm adding one of these to your diaper."

"That's not fair!" Sierra fumed, stomping her foot.

"That's one for whining," Haley counted them out, adding them to the first, "and one for stomping your foot. That counts, too. Come on, Sierra, I have plenty. How many do you want? Eventually, your cute little shortalls aren't going to fit over your big Pamper-butt, but that's all right with me. I'm happy to parade you around in just your shirt and diaper."

Sierra swallowed, having no doubt the girl was telling the truth, and that she wasn't far from reaching that point already. "I-I want you to take me to the bathroom, a-and put me in a... d-diaper..."

"Hmm, close," Haley nodded. "But call them Pampers. It's so much cuter, don't you think?"

"They aren't Pampers!" Sierra exclaimed, a little louder than she'd meant, making her blush and look around, afraid she'd been overheard.

"Oh, they're so much more grown-up than that, aren't they?" Haley teased, picking up yet another soaker. "And you must think you are, too, to keep arguing with me. Now, do as you're told. Oh, and make sure to call me Ms. Haley, immature little brats like you should address real grown-ups appropriately. And don't forget the magic word!"

Sierra gritted her teeth, giving her shoulders an experimental shuffle, hoping the harness would magically slip off and free her, although there was no way she could hope to outrun Haley's much longer legs. "Ms. Haley," she forced herself to say, "will you please take me to the bathroom and put me in a... a P-Pamper..." Even knowing she was doing it to protect herself, and that she had no real choice, Sierra couldn't keep it up through that last, humiliating word.

"Why?" Haley asked, reaching into her purse again, which Sierra took as a warning that another soaker was imminent. "Put it all together and say that, Sierra, and I'll see what I can do."

Sierra turned bright red. Was she really making her do it again?! She looked around, almost hoping he was there now, at his store, to maybe help her, although, honestly, she didn't particularly want him to see her this way. He wasn't, anyway.

"M-Ms. Haley," she sighed, "will you please take me to the bathroom a-and put me in a P-Pamper because I wet myself?"

Haley grinned triumphantly, pulling her hand back out of her purse, this time holding her phone. She pushed a button on the app she was using, and Sierra heard her own voice come out of the speaker, begging to be diapered. "Just in case you get any bright ideas, and try to get me in trouble," Haley said. "Now I have proof you wanted this."

"N-No, I...!" Sierra started to protest, only to stop at Haley's warning look, realizing, since the diaper wasn't on yet, she could still make it thicker. She went quiet, blushing as Haley dragged her to the family bathroom. In a way, that made sense, since the changing table there was bigger. It was also not hidden away in a stall, but out in the open, since the bathroom was only meant to be used by one family at a time.

"C-Can you lock the door?" Sierra blushed, staring over at it as Haley began to undress her, expertly unbuttoning the straps of her shortalls.

"Is that more whining?" Haley asked.

Sierra pouted, nibbling nervously on her bottom lip. "N-No," she shook her head, praying nobody else tried to come in until they were done.

"No, Ms. Haley," the girl reminded her.

"No, Ms. Haley," Sierra parroted, her blush deepening as her shortalls were whisked away, leaving her damp trainers completely visible. Sierra gulped, staring over at the toilet, so close, and yet, with the huge cheerleader between her and it, so far. The training panties went off next, and into a small, plastic bag Haley also had in her purse, leaving Sierra half-naked in front of what was, essentially, a stranger, with the door unlocked for anyone that happened to come by and push it open.

"M-Ms. Haley?" she asked, eyes darting to the toilet again, reminding her of the rumble that had been forming in her tummy all day. "C-Can I use the bathroom first?"

"You're so funny," Haley chuckled, wiping Sierra's crotch clean before pulling out the diaper, laying it out on the changing table, carefully positioning the soaker pads in the center. "The bathroom is for big girls, like me. Anyone who just walks around in wet trainers, especially at your age, isn't a big girl. And, if you aren't a big girl, you deserve to be in these."

She gave the diaper a pat, producing a deafening crinkle that left Sierra weak in the knees as she stared at the massive thing. She tried to back away, but Haley was already grabbing her, picking her up, plopping her down in the center, chuckling as she saw the horrified look on the girl's face when she felt her backside sinking into the voluminous padding. After a few shakes of baby powder, and a few squirts of baby lotion, Haley revealed how large the diaper really was by pulling it up between Sierra's legs, expertly taping it in place as the other girl gasped, trying, in vain, to squeeze her thighs together.

"You really earned yourself quite the little waddle there, didn't you?" Haley teased. "Maybe you won't be as much of a brat next time." She gave the diaper a pat, then took one last surprise out of her purse, giving them a good shake to open them up before sliding them over Sierra's wiggling feet, tugging them up over the diaper. "These should help make sure of that," Haley said, rustling the plastic pants a little, producing a crinkle from both them, and the diaper beneath, even louder than usual, before tugging the chain in the waistband tight, locking them in place, and sealing Sierra inside. Finally, she helped Sierra down, tugging the shortalls back into place, Sierra letting out a sigh of a relief when they fit, if just barely.

"Now, then," Haley declared, once she had Sierra's harness back on, and tightened, "let's see what you have here."

Sierra had almost forgotten about why she'd come here in the first place, until Haley picked up the Victoria's Secret bag she'd set down when they first arrived in the bathroom. She blushed, watching the other girl pull out the panties she'd picked, turning them over in her hands, smirking. They were fairly modest, at least for Victoria's Secret, a bit lacy, cute.

"What were you going to do with these?" Haley demanded. "Wear them over your trainers? They definitely won't fit over what you're wearing now." She gave Sierra's bottom a hard swat, making the girl yelp and jump at the impact, even through the padding that should have protected her, the cheerleader's muscles proving more mighty than that. "Victoria's Secret isn't a store for lazy little Pamper-wetters like you, it's for big girls, like me, just like the bathroom. Come on, Sierra." She put the panties back into the bag, shoving it into Sierra's hands. "We're taking those back. And you're going to apologize for wasting the workers' time for making them sell those to you, and explain why you don't need them... Although, I bet they'll be able to guess as soon as they see you."