Summer was finally here, but Anna didn't really know what to think of it. On one hand, it meant school was over and she had a two-month break ahead or her, but she also had to find a job to make some money because she couldn't let her sister do everything. Even with Esméralda living with them and paying a third of the rent, it wouldn't be fair to spend her days enjoying herself while Elsa worked hard.

Summer also meant hot weather, which was nice, especially because Corona was on an island, so they could easily go to the beach to freshen up. But hot weather also meant no more cuddles with her sister, or, at least, less. Anna could deal with the uncomfortable warmth and sweat involved in cuddling in hot temperatures, but she knew Elsa couldn't, and the nights spent sleeping in each other's arms were almost over. We should install air conditioning. I'll crank it down and this way sis will cling to me all night.

It was the last day of school today, and she had said goodbye to all her friends. She knew she would see Kristoff often with him living just next to her, but she didn't know if she would be able to see Aurora. She was going back to her parents' place, and it was unlikely that they would meet again before September.

She had planned to stay in Corona the whole time. It was out of the question to go back to Arendelle, obviously, and they hadn't planned to go away on vacation. Rapz and Finn had invited them to go camping, but the two sisters weren't sure they could make it. It would depend on whether or not Anna found a job, and if Elsa could take a few days off hers.

And there was Esméralda too. Since she had become a legit flatmate she had started to grow more carefree, and Anna had more and more difficulties trying to resist looking at her exquisitely tanned body. Especially now that it was growing hotter and that her clothes were becoming thinner and lighter every day. Cleavage was going deeper, shorts and skirts were rising higher, and Anna just hoped that at least her sleepwear would stay the same.

Elsa fetched her from school, and they had returned home for a few minutes when Esméralda approached them.

"What do you say we go shopping?" she asked, a big smile on her face.

"Shopping? Why? We don't need anything." answered her pragmatic sister.

"Well, it's summer. So... we need bathing suits."

"I already have two."

"Yeah, but your sister needs one, right? I'm sure she grew since last year."

"I'm eighteen, not twelve!" said the redhead with a pout. And she had not grown up at all.

"Oh, really? I thought you were sixteen! Do you mean your chest won't ever grow bigger?" she said, teasing, and Anna stuck her tongue out at her. She didn't like being teased about her breast size. Not everyone could be as gifted as her sister. Or Esméralda.

"I'm just teasing little one. I'm sure they're really nice. Right hon?"

Elsa blushed but nodded, and Anna's cheeks turned red too.

"Anyways... we need new swim suits! So let's go."

"I don't know. I'm sure there will be too many people" argued the blonde.

"Come on... you're the only one with a car here."

"You know I can give you the keys. It wouldn't be the first time."

"Please hon..." Esméralda looked at her with big doe eyes, and Anna felt outraged. That's my thing! You can't use that! She fluttered her long seductive eyelashes, and the redhead had to admit she was good at it too.

"Damn..." Elsa turned toward her sister. "You need a new one?"

"Hum... yeah, maybe."

"Ok, ok. Let's go."

"Yes!" yelled the brunette, raising her fist in victory, and Anna made sure not to look at her lower back which was made bare by the movement.

It turned out that when Esméralda said she wanted to go shopping, she actually meant she wanted to spend the whole afternoon and evening shopping. Also, it seemed the brunette knew everything about clothes and bathing suits. For Anna, it was quite simple: either you wore a one-piece suit, or a bikini. And she had stopped wearing one-piece suits for a good number of years.

"Hum... let's start with the little one!" said Esméralda, and the redhead was led to a cabin by a very energetic brunette. As Elsa had expected, the place was full. "Stay here and we'll bring you everything."

The two other girls disappeared and Anna waited. Elsa was the first to come back, with several bikinis for her.

"Let's try these pumpkin."

"Wanna come inside?" asked Anna teasingly, and Elsa blushed a little. The redhead chuckled and closed the curtain to try the suits over her underwear.

She was interrupted by Esméralda poking her head through the curtain and saying "Hey little one."

Anna jumped, startled, and the brunette laughed. "I brought you some things to try."

"Huh...ok."

"I'm sure you'll be so cute and sexy in this one." she said as she showed her what looked like a skirt.

"What... what is that? We're here for bathing suits."

"Yeah! It's a swim skirt. Just... just try it!"

Anna had huge doubts, especially because she didn't see the point, but she nodded if only for the brunette to stop looking at her in her underwear.

"Good. You should have worn a thong by the way. That's like the first rule when shopping for bikinis." she said as she watched her panties without shame.

"If... if you say so." Anna didn't want to imagine the brunette in a thong, and quickly thought about something else.

"Anyway, show us when you're done."

Anna spent the next twenty minutes trying the different articles the two other girls brought, and showing it to them. It had been a bit awkward at first, but after all they were just shopping, and it was swimsuits, not underwear. So, there was nothing to be embarrassed of. Even though Esméralda would comment that she looked sexy, hot, or cute. Just shopping.

"You still haven't tried the skirt?" she finally asked.

"I... I don't see the point. I don't need skirts."

"Just try it!" She had used her don't-argue-with-me voice, and Anna sighed and changed into the last article she had not tried yet. It would be faster to get it over with, than trying to argue with her.

She looked at herself before showing it to her sister and her friend, and she had to admit it looked nice. It was a blue extremely short skirt with a slit on the side, over a classic bikini bottom. And she didn't understand why, but it did seem hotter than just a bikini bottom.

She opened the curtain and waited for the two other girls' reaction.

The brunette squealed and it seemed Elsa liked what she was seeing. "She's so cute! Isn't she, babe? I want to squeeze her in my arms!"

"Yeah... yeah, she is." mumbled the blonde.

"So, what do you think Anna?"

"I don't know..." part of her didn't want to acknowledge than the brunette had been right from the start.

"Come on!"

"Isn't it too sexy?"

"There's more cloth than any other bikini you tried."

"Yeah, but..."

"It just leaves more to the imagination. We want to see what's under that skirt" she said as she lifted it with her fingers.

Anna blushed and mumbled something she didn't even understand herself.

"Well, I think we broke Elsa, so I'm gonna make the call. You're buying it! And if you're not, I'm buying it for you!"

Anna looked at her sister and noticed how red she was. Yeah, maybe I'm going to trust her on that.

Once she was outside, with the swim skirt and a matching bikini top in her hands, Elsa took her place and Anna ended up watching her sister try on multiple clothes. The redhead didn't really know how to advise her sister, and she happily let Esméralda do it. In the end, Elsa left with a sexy strappy one-piece suit that was open on the front. It did wonders for her curves and silhouette, and Anna was getting hotter by the minute.

However, she hadn't expected what was coming next. If Esméralda had argued more fabric could be sexier for both Elsa and her, it seemed she wasn't going to take her own advice. Every time the brunette opened the curtain, it seemed the swimsuits would get lighter and skimpier, and Anna was starting to panic at the way her own body was reacting.

"What do you think little one?" she asked as she twirled around, showing off her Brazilian cut bikini.

"I... I..." fucking stop stuttering! She looked at the brunette's round and tight ass trapped in a much too small bikini bottom. "It's ok" she managed to say.

"Just ok? Damn! That was cold!"

Anna looked at her sister, searching for help, but she seemed to suffer from the same predicament, which made her feel less guilty.

"I mean, I thought my butt was my best asset" added the dancer.

She seemed disappointed and Anna cleared her throat. "No... I mean... it's really good."

"Do you think I should cover it more?"

"Huh..." what can I say? The truth? What is the truth anyway? I do like seeing it. A lot. Even if I shouldn't. Or maybe I can find it hot. But I shouldn't say it. Especially not in front of Elsa. Fuck. She turned again to her sister, only to see her staring at the brunette bottom. Yeah, I'm not even sure she'll hear what I say. Somehow she didn't feel jealous that Elsa was entranced by the young beauty. How could I? I'm acting just the same.

"No... you... you should definitely take that one."

Esméralda smiled at her and whispered "I think we broke her again" as she briefly eyed Elsa.

Anna giggled and the brunette disappeared behind the curtain.

"It's really hot in here, right sis?"

"Y...yeah. Why don't they put on the AC?"

Anna was pretty sure it was already on, and she chuckled. "Well, at least we're ready to go to the beach now. You look awesome in that suit."

"Thanks sweetie. You too."

"I guess Esmé can give good advice after all."

"Yeah..."

They were soon back home and she was going to get her drawing stuff when Elsa spoke up.

"It was way too hot in that shop, I'm gonna take a shower. Wanna join me Anna?"

The redhead shrugged. "Maybe after dinner?"

The blonde came closer and whispered in her ear. "I want to fuck you right now."

The words sent shivers throughout her body and she instantly felt horny. It was so unlike Elsa to say things like that, but she loved it.

"Yeah... yeah let's go."

As soon as the door closed, Elsa let the water run to hide the noise and kissed her hungrily. Anna tried to keep up, but she had rarely seen her sister that horny, and she was soon all naked in front of her, trembling from desire.

"Fuck sis... what's gotten into you..." Not that she minded. At all.

The blonde didn't answer and she didn't waste time either. Anna gasped when she felt two long fingers slide inside her, and she started moaning in pleasure when her sister started kissing her on chest while moving her fingers in and out of her wet folds.

"Sis... god... I'm gonna..." she tried to warn her in between uncontrollable moans, and Elsa looked at her.

"Not yet pumpkin" she said in a commanding voice, and it turned on the younger sister even more.

Elsa took out her fingers from Anna, and put her hand under Anna's legs to lift her up. The flustered redhead was soon sitting on a very cold sink, and her sister buried her face between her goose-bumped thighs.

"Oh God sis..."

She felt her tongue lick all over her hot and wet lips, and then she was moaning and shaking while her sister's tongue focused on her most intimate and sensitive spot.

Elsa didn't know what to do, and she was getting more and more concerned as the days passed. At first she had tried hiding herself from it, but she couldn't anymore. Anna had been on break for a week now, and ever since the day they had all gone shopping, her libido had started sky-rocketing. Anna wasn't complaining, of course. Not at all. They would have sex every morning while Esméralda was still asleep, and every night when they took a shower. And also on some occasions when the brunette would leave the house and they found themselves alone.

In itself, it wasn't that wrong. After all, they were both consenting young adults, they both loved being intimate with the other, and it didn't hurt anyone. It didn't impact the other aspects of their relationship, and everything was great. Except, she couldn't deny it anymore: she was attracted to Esméralda. Not just attracted, she was becoming crazy about her.

And a part of her tried to defend herself. The brunette was extremely gorgeous and sexy. She had been her girlfriend once. And she wasn't shy about showing her body. Which really didn't help the situation, because finding a half-naked bombshell walking around their flat every morning wasn't going to make things easier.

Last night, she had encountered some trouble sleeping, and had gotten up during the night to go and grab a glass of water. She had come upon Esméralda, who was up for the same reason, except she hadn't bothered putting on a T-shirt, thinking she would be alone in the middle of the night. So Elsa had stood motionless before her ex who was wearing only panties. And she couldn't deny it. She had been aroused. Much so.

When she had got back into her bed, she had started fondling her sleeping sister, who had soon woken up and happily taken care of her needs. But it wasn't fair to Anna. She was in love with Anna. And Anna was everything she needed. So she shouldn't feel that way. She didn't know what to do, or even what to think.

Was it a bad thing to find people other than your girlfriend attractive? Was it wrong to be sexually aroused by someone other than your partner?

She was still thinking about it when Anna walked into the bedroom to join her in bed. Elsa took the time to look at her and was relieved. She loved her so much. And she was so beautiful and cute.

The redhead lay next to her and sighed. Elsa took Anna's left hand in hers and Anna smiled at her, which sent butterflies roaming in the blonde's stomach. Elsa couldn't stand cuddling in this hot temperature, so they had agreed to sleep holding hands instead, and both girls found it incredibly cute, especially when they would wake up still holding each other's hand.

"You were incredible earlier" said Anna, and Elsa blushed. She had been blinded by her lust again and had ended up fucking her sister in the shower.

"You too."

They stayed quiet for a while, and the younger sister was the one to break the silence.

"Sis… I have to tell you something..."

"Yes?"

"I… I feel like I'm attracted to Esméralda."

"Wha..." She hadn't expected to hear that at all.

"Please, don't be mad! Just listen to me!" Anna sat up on the bed but lowered her head. "I… I love you. And you know you're the most beautiful woman in the world. But… I can't help looking at her. Is it… is it bad?"

Elsa sighed and sat up too to hug her.

"I'm sorry sis..." said the redhead in a small voice.

"It's ok pumpkin. You can't imagine how relieved I am right now." It's normal. I'm not a freak. Well, I still love and fuck my little sister, but other than that, I'm normal.

"Wha… what do you mean?"

"I'm sure you noticed how… horny I've been recently."

"Yeah." She giggled. "I like that."

"Well… I… I'm attracted to her too. She drives me crazy." It felt so liberating to say this out loud to her.

"Fuck… that's why you were so turned on?"

Elsa took some distance to look into Anna's eyes. "No. I mean… you're everything I need. And you're the one turning me on. It's just… I don't know, being so close to her for so long. It's crazy how hot she is, right?"

Anna chuckled. "Yeah. Don't worry, I understand perfectly."

"You're not jealous?"

"Are you?"

Elsa took some time to think about it. Her sister found Esméralda attractive. She had the hots for her. Maybe she fantasized about her from time to time. Should I be jealous? How could I be jealous if the exact same things go through my mind? Besides, I trust her completely. Nothing could happen.

"No."

"Me neither. I trust you. And I love you. I guess it's ok to feel attracted to someone else."

"Yeah… I guess. Should we tell her? Ask her to be a little more… decent?"

"Are you kidding? Knowing her she'll be even more of a tease!"

Elsa couldn't help but laugh. Anna was right. "Yesterday I went to get a drink during the night. She was there, bare-chested, and she stood before me and talked to me like it was nothing."

"Damn, lucky you. Is this when you woke me up to have sex?"

The blonde blushed. "Yeah..."

"Well, you know, maybe I should actually thank her!" she answered teasingly. "It was a great way to wake up."

Elsa shook her head pleasantly and lay back on the bed. Anna joined her and took her hand. She felt lighter. Anna knew, and she understood first-hand because she was going through the same thing.

"I love you Anna."

"I love you too sis!"

Notes: Damn Esméralda, she's driving them nuts!

I'm happy to announce that Striga started proofreading the chapters! So no more typos and awkward phrasing! :D Thanks a lot ^^

Anon Guest: It's the European system. I mentioned earlier in OOY that I'm French ^^