Go swimming in the pool

It only took a few moments of conversation before the girls collectively decided to hit the pool for some aquatic fun. Jess's house had a large in-ground pool in the backyard, and more often than not, the girls had kicked off sleepovers at Jess's house by taking a dip. Indeed, Lily, Amy, and Jess had al been expecting this, as they were already wearing their bikinis underneath their clothes. The three girls quickly began stripping down, tossing their clothes in their bags.

Mackenzie hesitantly asked, "Jess? Um, I didn't bring a suit. Can I borrow one of yours?"

Mackenzie omitted the fact that she technically no longer owned any swimsuits. At least, not ones that fit her properly. She'd been blessed by generous developmental years and had... developed right out of her teenage swimsuits as a result. Buying new suits had been more complicated for her after getting banned from her local mall, so she'd resorted to buying one online. And it had fit perfectly! But it (along with an additional suit she purchased) didn't survive the trip to a nearby water park a few weeks prior. She'd recently purchased another online, but it hadn't arrived yet. And so Mackenzie had simply assumed she could rely on Jess's generosity. They were both similar sizes in most ways.

"You could always just swim naked," Amy teased, causing Mackenzie to blush.

"It's fine," Jess said with a chuckle. "Of course you can borrow one, Kenz."

As Lily and Amy headed outside, Jess opened one of her dresser drawers. She pulled out two bikinis in different colors.

"What color are we feeling today? Pink or purrrple?"

"Um," Mackenzie hesitated, noticing that both options were string-tie bikinis. She felt vastly less secure about wearing those, feeling like the knots came undone at the lightest touch for her. "Do you have any others one? That aren't... string-ties like that?"

"Oh, uh..." Jess said, looking deeper into her drawer. "I mean, not really. At least, not ones I've worn since junior-high," she chuckled. Jess pulled out a pale green bikini that simply pulled into place. Mackenzie took it and held it up to her body.

"I think it'll be fine. Thanks, Jess," the redhead said. And then she began undressing. There was once a time where Mackenzie would have been too shy to change in front of her friends. But after all the embarrassing ordeals she'd been through the past half-year (some even leaving her friends stripped naked alongside her), and being seen naked by literally hundreds of people, changing into a swimsuit in front of her best friend felt like a trivial matter.

Jess, meanwhile, noticed that the two of them were alone again. And so, she tried to take advantage of it.

"Hey, Kenz, there's something I've been wanting to talk to you about."

"What is it?" Mackenzie asked as she took off her tank top, baring her black bra. Jess's eyes involuntarily drifted down to her crush's well-endowed chest.

"Uh..." Jess trailed off for a moment. "I-it's about us, actually..."

Mackenzie unbuttoned and slipped down her jean shorts, exposing her cute little pink panties, complete with red polka dots. Jess couldn't help but blush slightly.

"About us? About us how?" Mackenzie asked as she moved her hands behind her back.

"Well..." Jess said, forcing herself to look away from Mackenzie's underwear-clad body. "L-like us as in... what we mean to each other!"

Jess glanced back at her friend, but it was a mistake. Because she glanced back just as Mackenzie was sliding her bra off her arms, and Jess got an eyeful of boobs. She couldn't help but stare in awe, not for the first time, at Mackenzie's lovely breasts. Perfectly sized, ample but not too huge. Beautifully round, sitting nice and perky on her torso. Immaculately topped with the pretty pink nipples Jess had come to know and love.

"Jess? You okay?" Mackenzie asked after a short silence from her friend. Jess looked up to meet her eyes, and found herself feeling lovestruck at the sight. Mackenzie's beautiful face, with a confused yet caring expression only heightening her appeal. Her lovely red hair up in a rushed ponytail, leaving a few stray strands hanging down by her temple. Her cute little nose, ever so slightly flushed cheeks, gorgeous eyes. Jess couldn't take it. It was just too much!

"I, uh, I'm fine!" Jess blurted out, blushing quite a bit. "I-I'm gonna go jump in. See you in the pool!"

And with that, Jess practically sprinted out of the room, leaving behind a puzzled Mackenzie. The redhead just assumed her friend was thinking similar thoughts as she had been. They would have to part ways soon, and that inevitably lead to feelings of how much they'd miss each other. Mackenzie sighed wistfully and continued changing. She'd talk with her friend about it later.

"Are you sure that bikini fits?" Lily asked nervously upon seeing Mackenzie arrive in the backyard. Jess's house had a walkout basement that emerged onto a large patio. Which itself surrounded the even larger pool. There was a significant amount of lawn on the other side of the pool, and the entire yard was surrounded by tall wooden fencing. Overall, it encompassed quite a large area, and the girls had spent many a summer night out in it.

"I-it fits!" Mackenzie insisted. She had managed to just barely squeeze herself into the swimsuit, although it had taken over three literal minutes of yanking and pulling. The fabric clung uncomfortably tight on Mackenzie's pale skin, with both the top and bottoms visibly digging into her body around her chest and hips.

"If you say so," Amy said with a chuckle at the redhead's clearly undersized bikini. Jess, meanwhile, found herself speechless as she took in the ridiculous cleavage Mackenzie was unintentionally sporting from the top's tightness. But undeterred, Mackenzie jumped in the pool and joined the rest of them.

After a bit of swimming around, the four friends decided to play a little pool volleyball. Jess and Amy set up the net which spanned the pool and formed teams. Jess and Mackenzie on one side, Lily and Amy on the other. With each girl crouching in the shallow water, Jess served the ball and began the game.

It only took a few minutes of jumping around and diving for balls before disaster befell Mackenzie. She had jumped up high, winding her arm up to smack an incoming serve when it happened. The center of her borrowed bikini top split under the massive amount of strain Mackenzie's impressive bust provided, and her tits burst free in an almost comical fashion. By the time she splashed back down, Mackenzie had already crossed her arms over her bare chest, with her face reddening rapidly.

"Woohoo!" Amy cried, "We got a tits sighting everyone!"

"Amy, don't be mean," Lily said. "You alright Kenz?"

"Y-yeah," Mackenzie said. Unfortunately, it wasn't the first time her breasts had been bared in Jess's pool. Or the second. ...Or even the third. At least there weren't any boys around this time.

"I told you that bikini didn't fit!" Lily chided.

"Looks like you were right," Mackenzie sheepishly said. "I'll go change into a different top..."

"The hell you are!" Amy called. "Come on, we were just getting into the swing of the game. Just keep playing like that, you're fine. "

"But, I-"

"We've all seen your tits before," Amy rolled her eyes. "Hell, most of the town has by now," she added quietly so only Lily could hear. "And glorious as they may be, it's just us here Kenz."

"She has a point," Lily agreed. "Don't be a spoil-sport!"

Mackenzie really didn't want to keep playing topless. She knew her friends were right. No one else could have possibly seen her. No one was in the house, and the fence was high enough that even neighboring houses couldn't look in. But she still felt so... exposed. Mackenzie looked to Jess to see what her best friend thought.

Jess wanted to help comfort her friend. She didn't want her to feel exposed and embarrassed. But then again, it wasn't like she hadn't just exposed those very same boobs to her a few minutes ago. And she hadn't been embarrassed then. So, feeling just a little selfish for it, Jess looked at her friend, gave her a reassuring smile, and shrugged as if it was no big deal.

"It's your serve again," Jess said as she tossed the inflatable ball back over to Lily and Amy.

Mackenzie sighed, but had to admit her friends had a point. She shrugged off the ruined top and chucked it out of the pool, eliciting another cheer from Amy. Mackenzie playfully flipped her off, but readied herself to return another serve.

"She is sooooooo fucking hot," the boy said, almost as if in a trance, as he continued to watch the gorgeous redhead jump all around the pool. Completely topless.

"Yeah..." the boy next to him said, sounding similarly fixated on the bouncing pair of breasts on display just 40 feet away from him.

"Eh, I got a closer look at her when I was at prom," another boy lied, sounding as if he didn't particularly care about the half-naked girl outside. But he, too, had his eyes locked on Mackenzie's bare body. And though he had gotten a glimpse of her naked humiliation at prom, he had, in fact, been quite a bit farther away.

"Excuse me for a second," Josh said as he stood up to leave the basement. As soon as he had began climbing the stairs, one of the three remaining boys hurriedly pulled out his phone and pointed it outside. "And NO RECORDING!" Josh shouted back down behind him. The boy nearly dropped his phone in surprise.

"I-I wasn't!" he shouted back. "I was just, uh, checking a text. Chill, dude." He shoved his phone back in his pocket with a flustered look.

Josh had been planning on spending the night at his friend Tony's place that night. along with his friends Kyle and Lee. But after a strange power outage struck the house, Tony's parents encouraged the boys to spend the night elsewhere as they frantically tried to discover the cause. So, he had politely offered that the four of them could spend the night at his house instead, omitting the fact that his parents wouldn't be home at all.

Upon arriving home, they'd soon heard the girls shouting and splashing out back. The boys had gone down to the basement and were all stunned by what they saw through the sliding glass doors. There was Mackenzie playing in the pool completely topless. The three guests had quickly jumped behind furniture in order to stay out of sight, but Josh had just chuckled. He'd spent enough summer evenings playing in the pool to know that with the current lighting, seeing into the basement from outside was next to impossible with the sun's glare. But the boys could see out just fine. And so they had spent the next ten minutes enjoying the sight of Mackenzie, completely oblivious to their presence, with her tits on full display.

Josh continued his ascent, reaching the ground floor of the house and continuing upstairs to the bedrooms.

He hadn't been too surprised to see Mackenzie was in some state of undress. Over the past six months or so, it seemed like if she had been over at their place then there was a 50-50 chance Mackenzie would end up showing at least something off while he was around. Sometimes it was just as simple as her skirt blowing up in the wind, showing off a cute pair of panties. But other times she ended up exposing quite a bit more. Although nothing ever topped her little sleepwalking incident. Josh had vowed never to tell anyone else about what had happened that night...

Josh opened the door to his sister's room and stepped inside. He soon found Mackenzie's bag next to the bed.

The two of them had been friends once. But as they grew up, Josh found himself having a rather large crush on Mackenzie. It had made it difficult to interact with her (at least, not without him feeling like he was always making a complete fool of himself), and so he'd actually begun avoiding Mackenzie somewhat. He just wasn't sure what to do with his feelings, and was terrified he'd ruin any chances he had with her. With hindsight, he saw that avoiding Mackenzie had only ruined their friendship and ironically likely also ruined his potential chance with her. He kicked himself for never telling her how he'd felt about her, and regretted it often. And when she'd first started getting exposed around him, Josh had thought that perhaps Mackenzie was coming on to him in a weird way. But after he soon saw that she was getting similarly exposed in front of... well, literally the entire school, he gave up on that notion.

But he was over her now. Well... okay that wasn't true. Josh still had a bit of a crush on Mackenzie. But it was nothing compared to the deep infatuation he'd once felt for her even just a year prior. He'd come to terms with the fact that he'd never get together with Mackenzie. He really had. But if there was one thought he couldn't stand, it was that his sister was going to make the same mistake he had.

Josh knew Jess was absolutely head over heels for Mackenzie. She hadn't told him or anything, but he could clearly see it in her eyes every time she looked at her. Every time she lit up when Mackenzie arrived. Every time they cuddled up together on the couch. Really any time they were doing anything together, Jess seemed at her happiest. And so, Josh had resolved that he would do whatever it took to get Jess to admit her feelings for her beautiful redheaded friend. And it seemed like that night was his perfect opportunity to do so.

Josh unzipped Mackenzie's bag and began pulling out her clothes. He closed the bag and carried the small pile of cloth to his bedroom before stashing it away. The girls always liked to shower after swimming, meaning Mackenzie likely wouldn't realize her clothes were gone until after she'd finished toweling off. Then, finding she had none, she'd invariably ask Jess to borrow something to wear. Josh returned to his sister's room and began opening her dresser drawers. He spent the next several minutes making... adjustments to quite a few pieces of clothing. He obviously couldn't alter everything, but he knew both his sister and Mackenzie pretty well. He was confident he could narrow down what would be selected to just a few things, and then work with those. Then he worked on a few more, just to be safe. He was determined to play matchmaker that night. If he could only engineer just the right scenario for the two of them to wind up in...

Once his work was completed, he headed back down to the basement to rejoin his friends. His work would have been considerably easier if the three of them weren't there. Maybe it would be best if he had them leave. Hell maybe he could even find a way to convince Amy and Lily to go home as well. That would leave the two lovebirds all alone, and leave him free to pull the strings from behind the scenes. But Josh decided against it. Maybe that would become necessary later on, but for now having more people in the house would actually work to his advantage. He re-entered the basement and found his friends, unsurprisingly, exactly where he'd left them.

"Did he pull his phone out again?" Josh asked, gesturing to Tony.

"Nah, he's been good," Kyle said, still transfixed on the topless young woman.

"You missed it!" Lee said excitedly. "Her bottoms must've ripped or something because she just took those off a few minutes ago!"

Sure enough, as the blushing girl jumped out of the water to block a shot, Josh was greeted with the sight of Mackenzie's pussy. He just shook his head slightly in bemusement as the beautiful naked girl continued playing with her friends. Why was he not surprised?

"Where did you go, anyway?" Tony asked.

"Oh, just... helping to make the night a little more interesting," Josh said. "For them and for us."

He wouldn't let Jess down.