Prom

This is a work of fiction and all characters - both of them :) - are of legal age. Originally I hadn't intended for this story to be about a brother and sister, but story-wise it was just better that way than when it had been two close friends.

I would like to thank Bert_Fegg for his editing and helpful suggestions to make this story even better than it was before.

**********

"Are you okay?"

Brad looked up at his sister briefly. "Yeah." He let out a brief sigh. "No. I don't know." He felt Brianna plop down next to him on the couch, her arm immediately coming to rest behind his neck, her hand on the other shoulder, pulling him just a bit closer to her.

"What's going on," she asked.

Brad simply shrugged, not feeling very comfortable about talking about the hell that was his life, especially to his sister. "Just... stuff." At her slightly raised eyebrows he added, "At school."

"What stuff?" she asked, not letting him evade the subject. When he remained silent, she tightened her arm around him briefly. "Hey, I'm your big sister. You can talk to me about anything, you know that."

She was right, of course. Despite the eight year age difference, Brianna and he had always been close, could always talk about anything. That had only changed when she'd gone off to college, the distance only growing when his parents decided to move from the east coast to the west coast. He'd only seen her during the holidays, and while that had always been great, it just wasn't the same.

After college she had moved in with her then boyfriend, deciding to stay back east. Then suddenly two months ago, his sister had announced she was coming to the west coast. Without her boyfriend. Brad still wasn't sure why they had broken up, but he was going to figure it out soon. The point was, her moving here and, at least temporarily, living in the same house again, had seen their closeness return almost immediately.

"I bet you're looking forward to prom night," Brianna said, probably in an attempt to get his mind off of his problems, but unknowingly hitting on what was bothering him the most right now.

Brad sighed. "Not really." He didn't even have to look at her to know she was now frowning. "Jen... She broke up with me." Though he wondered if you could even call it breaking up when one party had never considered it to be a relationship in the first place.

"Oh, Brad," Brianna said, once again pulling him close. "Well, it's her loss for letting go of the best guy she could ever hope to be with."

He turned his head and glared at her, immediately feeling bad for it, since she wasn't aware of the circumstances. "I was just a bet," he ground out, the revelation still raw. "Her friends bet her she couldn't stand to date me for three months." He shook his head and stared ahead of him. "I should've known. Why would a hot girl, any girl really, want to be with a dorky nerd like me? She just laughed in my face, Bri. I asked her why she couldn't at least have waited until after prom, and she just laughed. I mean, God, my first girlfriend wasn't even my girlfriend. How pathetic is that? I'm the biggest loser on the planet!" He turned to look at Brianna and noticed anger, something he had expected. He was taken aback by the intensity of her rage.

"I wanna go over and rip that bitch a new one," she said, anger evident in her voice. She remained on the couch, her arm still around him. "But, Brad, sweetie," she said gently. "You're not a loser. What she did is fucked up, but you can't blame yourself for that. And you're not a dorky nerd, either."

"I'm sure everyone at school knows about this by now," Brad said. "Do you really think they're not thinking I'm a loser? I'm sure she's told her friends and God knows who else everything I told her..." He suddenly blanched. "Oh, God, I told her I'm still a virgin!"

"Sweetie, that's nothing bad," Brianna told him gently. "It's pretty cool to save yourself for someone special."

Brad glared at her again. "Nothing bad? I'm eighteen and still a virgin! And I wasn't saving myself! I just can't get a girl to be with. And even Jen managed to hold off on the sex for those three months, though I now understand why. God, I can never show my face again around school! And I sure as hell am not going to the prom."

Brianna looked at him, remaining silent for a while as if she was trying to figure out how she could fix his problem. Then an odd grin appeared on her face. "Maybe you should go to your prom. Show off with a really hot girl, one who's willing to show copious amounts of PDA."

Brad snorted. "Yeah, like I can find a girl like that. And within a week, no less."

"I'm available," Brianna said.

**********

Brianna kept her gaze firmly on her baby brother, trying to show him she was very serious with her offer.

"Yeah, ha ha, good one," Brad said, clearly not believing her.

"No, I'm serious. You could take me to the prom."

He looked at her for a little while. "Are you crazy? You're my sister!"

Brianna nodded, her gaze never leaving his. "Yeah, but the only friends I made around here are in a serious relationship, or I would've asked one of them. And nobody you know has ever seen me, not even... that bitch," Brianna finished her sentence, her anger toward the girl rising, but she pushed it down. "So, really, nobody would know me, or that I'm really your sister." She smiled as he gazed at her, as if trying to determine if she really meant it.

"Wouldn't that be a little weird," he asked. "For me to show up with someone new, barely a week after I was dumped?"

Brianna shrugged. "Not necessarily." She counted it a small victory he wasn't thinking that taking her to the prom was the weird part. To her, it wasn't. He was her baby brother and she'd do anything to help him.

"But, do you even have a dress?"

Brianna smiled and nodded. "Yep, still have my prom dress. It probably still fits." She frowned slightly. She hadn't gained anything around the waist, but her bra size had definitely gone up. She tried to remember if the dress had been snug on top during her prom, but she couldn't quite remember. "Wait, I'll go try it on. You just stay here, okay?" At his nod, she stood up and walked toward her bedroom. It didn't take her long to find the dress, but looking at it critically and looking down, she was doubting if her boobs would fit in there.

She shrugged to herself, and began to undress. She admired herself in the mirror, clad in only her thong, before she picked up the dress and looked at it once more. It looked like it hadn't been too snug back then, but she wasn't quite sure if her boobs, after the growth spurt she had around the time she turned twenty, were going to fit. It was definitely going to be tight, but all the guys at the prom would be insanely jealous of him if she managed it.

Brianna remembered that she couldn't put on the dress by herself properly, that she needed someone to close it at the back. When she had been getting ready for her own prom, her mom and one of her girlfriends had helped her, but neither were here.

She shrugged to herself once more, put the dress against her front and walked back toward the living room, deciding her brother could help her with that. "You'll have to close it up for me, Brad," she said, making her way toward the couch, turning around so he could help her. "The bottom part is just a zipper."

It took almost a minute before Brad started to fumble with the zipper, and Brianna suddenly knew why: she was wearing just a thong and the dress, the latter currently only covering her front. Well, it couldn't be helped. Besides, he was her brother; this shouldn't be such a big deal.

It took him a few tries, his fingers once slipping off of the zipper to lightly smack against her ass, but he managed to zip up the bottom part without difficulty. She turned slightly toward him, smiling. "See, still fits. Well, the bottom part at least. These," she lightly shook her boobs as she clutched the dress against them, "are a bit bigger than they were when I went to my prom."

She faced away from him again trying to hide the light frown when she realized what she had just done. Why the hell had she emphasized her bigger boobs by bouncing them? "There are four straps, two on each side, that need to go straight across my back toward the other side, where you can hook them. Just like a bra."

**********

Brad's mouth was open slightly, his sister acting like it was the most normal thing for a brother to help his semi nude sister into a very sexy dress. At first when she had stood before him, he hadn't known what to do or how to react. Her entire back was bare to him, except for the thong she'd been wearing. Deciding that getting his sister decent was probably the best way to deal with the uncomfortable sight before him, he had fumbled with the zipper. He'd blushed profusely when his fingers had slipped off of the zipper when the item had suddenly stopped moving, causing the back of his hand to hit her on the ass.

But as she had turned a little and informed him her chest was bigger than it was some eight years ago, especially as she had shaken them up and down a bit, that had really gotten him speechless. And now he also became quite a bit nervous, knowing he'd have to hook four straps 'just like a bra.' He'd never had even touched a bra, didn't quite know how to do what she asked. "Uhm, I've never, uhm."

"Don't worry, it's easy. Just two hooks that'll interlock."

Brad shook his head at the casual way she explained it to him. His eyes took in the smooth, silky skin of her back. And no tan lines anywhere, he noticed. He shook himself, suddenly realizing she was his sister. He looked for the straps she had mentioned, saw only one and his hand moved forward to grab it. Then he hesitated. Except for the straps, the dress would leave her back completely bare. More importantly, the sides of the dress where the straps were located, were not very close to her back. Not at all. He could tell that once the dress was completely on, the side of the dress would be almost at the front of her, exposing not just her back but her sides as well.

"Come on, Brad. I don't wanna stay like this forever."

Brad noticed his hand trembling as he reached once again for the strap. The strap that was attached at chest height. Near the front of the dress. It felt like hours before he finally managed to take hold of the strap, deliberately grabbing it a little lower.

"Make sure you don't twist the straps, 'cause that would be really uncomfortable for me."

His eyes shot up to the back of her head. Didn't she realize what this was doing to him? Instead he sighed as quietly as he could, hoping she wouldn't hear it. "Right," he said, adjusting his hold on small strip of fabric, almost up to where it was attached to the front part of the dress. Using his fingers, he straightened it, as he moved toward the other side. Once there, he was faced with the next challenge: attaching the strap to the other side, using a mechanism he had no experience with and, he now realized, was actually on the inside of the dress.

Of course, that was the best place to put them, as it would be completely concealed from sight. But that also meant his hand would have to be between the dress and the side of his sister's breast. He then frowned, realizing he was already holding the tip of the strap, but it barely reached to the side of the dress, let alone far enough for the hooks on the material to catch at each other. "Uhm, I don't think it's gonna work," he informed her. "I can barely reach the other side."

"Told you the girls are a bit bigger now. Here, does this help?"

Brad was afraid his eyes would pop out any second now. Apparently Brianna was pushing her breasts flatter against her body, which did give him almost an inch, but it also resulted in the sides of his sister's breasts being pushed out a little further and toward the back a little.

"Can you make it now," Brianna asked again.

"Uhm, yeah. I think so." He took a deep breath, noticing his hand was shaking once again as he moved it, along with the tip of the strap, between her breast and the dress.

**********

Brianna bit her lower lip, her mind going in a direction that wasn't quite appropriate. She'd never been particularly shy about her body, but she was fighting the urge to let the top of the dress 'accidentally' slip and fall down her body. That wasn't something she should do in front of her baby brother. A lover, yes, but not Brad.

She held out her elbows a little, keeping both hands firmly against her boobs and pressing them against her body. "That should give you a bit more space," she said, waiting patiently as Brad attempted to hook the strap to her dress. "You can use your other hand to just flip the dress a little, so you can better see what you're doing." He did what she asked, but it still took him over a minute before it successfully hooked. "There you go. One down, three to go."

"Uhm, there's no... I mean, I saw them just now when... They're kinda... trapped."

Brianna frowned. "What do you mean 'trapped'?" Suddenly understanding dawned. "Oh. Well, uhm, can you pull them toward you?" There was no reply, and no movement, so she turned toward him slightly, looking over her shoulder. "Can you?"

"I'm not sure if that's such a good idea. Can't you grab them?"

"Not without letting go of the girls, and I'm not quite confident the one strap will be able to hold the strain." Actually, she was quite sure it wouldn't, considering the amount of pressure she had to put on her boobs to even allow the straps to be attached. "So, either grab the straps, or unhook the one you attached earlier so I can fix it." She turned back toward the front and moments later felt his fingers dig between the side of her breast and the dress and he started to gently tug on one of the straps. "Brad, hold on, sweetie. The hook is caught on the front here, and I don't want you to rip the dress."

He stopped immediately and she pondered on how to fix it. "Okay, you're gonna have to fix the problem, since I can't let go of my girls." She turned around completely to face him. "It's stuck right here," she moved the index finger on her right hand to indicate where the hook had caught the dress. "Just reach in and carefully extract the hooks from the dress."

She tried not to frown, despite her current conflicting emotions and thoughts. The fact she could feel her nipples press against the palms of her hands, simply at the thought of her baby brother having to touch her breasts, was not something she had expected. It was simply wrong. Wasn't it? Yes, it was. She should've asked Brad to unhook the one strap and pull down the zipper, so she could fix it herself in the privacy of her room. Come to think of it, she shouldn't have asked her brother to help her with this at all.

**********

Was she serious? Did she really just ask him to put his hand between her breasts, little room as there was between them? He lifted his hand and moved toward her cleavage, shaking uncontrollably. He looked up at her soft giggle.

"Just relax, sweetie. Dip inside, find the hook and untangle it from the dress."

Brad kept his gaze on her for a little longer, smiling ever so slightly, then moved his hand downward. Soon his fingers dipped into the small gap between her breasts, feeling her smooth soft skin as his finger moved in even further.

"Okay, just move to the right an inch or two and you should find it."

He nodded, his gaze now fixed on her breasts. He'd only ever seen her once in a swimsuit, but he'd been eight at the time. He'd never really known just how large her breasts actually were.

"Sweetie, I meant my right."

His head snapped up, ready to apologize for being so dumb, but she simply smiled at him softly, giving him a wink. "Though I probably should let you cop a feel when we're at the prom anyway."

He was blushing again. Then again, he didn't think there was a lot of blood going in that direction to actually be noticeable.

"I can tell you like that idea." She leaned toward him. "I think it's time for you to unhook the strap again, and unzip the bottom part."

**********

Feeling Brad's hand slide along her left breast had only caused her to become more aroused. Her thong seemed to be definitely soaked now, her nipples even harder than before. More importantly, she didn't even attempt to convince herself this was wrong. At her half joke about having him cop a feel, she noticed Brad was clearly affected by this as well.

As soon as Brianna felt the strap being unhooked, she released her hold on the front of her dress, simply letting it cascade down, leaving her chest bare to her baby brother. She stopped his hands as they started to move toward the zipper, guiding them to her boobs. "You deal with these, I'll deal with the zipper," she said. She reached back behind her, unzipping it, while watching the expression of wonder on Brad's face. She was acutely aware she was going to be his first, in several ways. The first tits he was seeing. The first tits he was kneading, inexpertly but still gentle. Soon he'd get to see his first pussy and feel a woman's wetness for the first time.

Suddenly he pulled away. "No, this is wrong. You're my big sister."

She grabbed him and pulled him closer again. "And you're my baby brother." She planted a sweet kiss on his lips. "Brad, I realize this is a bit unorthodox, but I can see how much that bitch hurt you. I want to help you get over her, in every way possible. And I really want to have sex again. It's been too long." It really had been. From the first time she had sex, she had loved it. As a result she'd become very active, almost wanting sex every single day. Ever since her break-up she hadn't wanted to date anyone for a while, though her sex drive had tried to get her to at least get someone to fuck. She had resorted to regular masturbation, but it wasn't as satisfying.

In retrospect, it was obvious now why her mind had started to think these thoughts about her baby brother, why she had become a little bolder in her actions; she was just really horny, horny enough that she didn't really care that it was her brother she was having these thoughts about.

**********

Brad found himself being hugged tightly by his mostly naked sister. The feeling of her full breasts pressing into him turned him on even more. He wanted to feel them against his own bare skin. Brianna released him again, a pleading look on her face, but she didn't need that anymore. If she wanted it, and he wanted it, why fight it? He took a step back, noticing a brief look of disappointment as she misinterpreted his move as a rejection. Instead, he removed his shirt, and crashed back against her, his need to feel her amazing tits against his skin urging him to pull her even tighter.

"Your room or mine?"

Leaning back slightly, he looked at her, smiling. "Yours, if that's okay." He hoped it was, since he hadn't felt like keeping his room anywhere near tidy since Jen had broken his heart.

She smiled back at him. "Sure. Come on, sweetie."

He followed her, ignoring the discomfort of his erection trapped in the confines of his pants as he walked the short distance, though he was sure he'd walk halfway around the world. Her thong gave him an excellent view of her firm ass as she led the way to her room. Once inside, he closed and locked the door, hearing Brianna giggle again.

"You know mom's not back for another two days, and dad won't be here for another week."

He turned around, shrugging. "Yeah, well, better safe... than..." In the time it had taken him to close and lock the door, Brianna had taken off her thong.

"Sorry. The word you're looking for is 'sorry'"

He couldn't help but look at her bald pussy, his very first one. Oh, sure, he'd seen them in certain magazines and several sites he visited regularly on his computer, but this one was right here with him. He'd only have to take a few steps and reach out with his hand to touch it. He took in the now completely naked young woman in front of him, really looking at her. She was simply the sexiest woman alive.