Beca has always loved Halloween.

From a young age she was fascinated by the macabre and zombie movies quickly became bonding time for her and her dad. Given that her birthday was less than a week from her favorite holiday, her celebration of Halloween usually ran long, bumping well into the first week of November. (There was that one year they had completely converted the house into a haunted house and didn't take it down until a few days before Thanksgiving. That was her favorite Halloween memory.)

So when Chloe calls, asking if Beca wants to attend Aubrey's annual Halloween party with her - apparently Aubrey has parties for all the holidays - Beca says yes. Aubrey and all, there is no way Beca is going to pass up the opportunity to celebrate her favorite holiday with Chloe.

-xxx-

As it turns out, though, agreeing to go with Chloe also means being a part of costume, and Beca's been working on her own costume all year.

"So what are you actually going as?" Beca asks, fiddling with the faders to tweak her current mix.

"We," Chloe corrects with a smile. "And Mystique."

"Mystique?" Beca questions, quickly scrolling through her brain to place the name. "Oh. Wait. That blue chick from X-Men, yeah? How are we going to go as one person?"

"Well, she's a shapeshifter," Chloe says, as if that explains everything.

"Okayyyyy..."

"Which means it will be great! I'll go as Mystique - you know, red hair, blue skin and all - and you'll get to be Mystique pretending to be Beca."

"So... I'm going as myself," Beca states flatly, a slight frown marring her features.

"Nooooooo, not at all. I mean, with shapeshifters and stuff, it's like the appearance and everything is right, but the mannerisms aren't," Chloe explains. "So if Mystique decided to shift into you, the outward appearance would be you but the way she acted wouldn't be quite right."

"Mmmhmm," Beca nods skeptically

"You don't have to dress up at all, but you still have a character to play."

"Right," Beca says, turning back to her laptop. "And what might this character do?"

"Well, we can't be seen together," Chloe starts off with. "It'll totally ruin the whole concept."

"So you're making me go to your friend's house - your friend who hates me, by the way - and I'm not even allowed to see you all night?"

"It'll be fun!" Chloe encourages. "You basically get to act like me acting like you. And I never said I wouldn't see you at all, just that we have to be secretive about it. We'll be in the same room, just not together. And I mean, you've seen Aubrey's house..."

Chloe's wink at the end of the statement is all Beca needs to sigh in agreement.

-xxx-

"I don't understand why you have to pick out what I'm wearing," Beca says, crossing her arms in front of her chest. "I'm going as me, I'm pretty sure I can handle figuring out what I want to wear."

"But you're not going as you. You're going as me - Mystique - playing you. So it's technically what I would be wearing."

"Fine," Beca says, flopping backwards on to her bed. She gestures to her closet, which makes a grin break out on Chloe's face. "Dig in."

-xxx-

The look on Aubrey's face when Beca shows up without a costume is almost what makes it worth letting Chloe talk her into this ridiculous idea in the first place. (Almost, because what really makes it worth it is what Chloe's wearing. She's blue from head to toe, her red hair - now trimmed shorter - is slicked back, and the only thing covering her head to toe blue skin is a pair of white knee high boots, white elbow length gloves, and what Beca can only be described as a scrap of white cloth that clings to her every curve. Slit up to her hips on both sides, the cloth is just barely wide enough to cover Chloe's ass as Beca is trying really, really hard not to stare.)

"Did you not tell her it was a costume party?" Aubrey huffs at Chloe, completely ignoring the fact that Beca is standing right next to her at the door.

"She is in costume!" Chloe offers. "She's me - Mystique - in shapeshifted form."

Aubrey shakes her head, turns back to the party, and Chloe slips her hand into Beca's, giving it a quick squeeze before heading in as well. Beca adjusts her shirt and runs her fingers through her hair one last time before taking a deep breath and following them inside.

-xxx-

Navigating the party without bumping into Chloe isn't terribly hard considering sheer number of people at Aubrey's house. However, avoiding all of the drunk morons doesn't manage to be quite as easy.

"And what are you supposed to be?" Someone slurs from behind her. She spins around to find a short guy in a black suit, white shirt unbuttoned halfway down his chest, and a pair of black aviators covering his eyes, reeking of weed and alcohol.

"You're too wasted to explain. Robin Thicke?" she asks, even though her question sounds more like a statement.

"You wanna go cross some blurred lines?"

She pulls a face and walks away, ignoring the I know you want it! he calls as she stalks off to find Chloe. This whole staying apart thing is ridiculous.

Aubrey's house is a maze of hallways and rooms, but Beca sticks close to the activity, assuming Chloe wouldn't stray too far from the actual party. As she turns a corner, someone grabs her arm and Beca just barely manages to contain her squeak of surprise as she spins around.

"Listen, dude, I..." she trails off when she looks up and realizes who grabbed her. "Chloe. Hey. Sorry, I thought you were douchebag Robin Thicke I just walked out on."

"I see you met Bumper," Chloe says with a laugh.

"Mmmm... if that's who that was, then unfortunately I have."

"C'mere," Chloe says, tugging on Beca's wrist as she makes her way down one of the many hallways of the house.

"Where are we going?" Beca asks, but Chloe doesn't answer, just tugs her into one of the rooms and pushes Beca against the door. The door slams shut with the weight of their bodies and Chloe presses her hips into Beca's, effectively pinning her to the back of the door.

Beca sucks in a breath and tries not to focus on what Chloe's wearing (or not wearing, really) as she presses into her. Her hands flutter awkwardly at her sides until Chloe slips her fingers between Beca's own and moves them to Chloe's hips, flexing her fingers before she moves them away. She rolls her hips into Beca's and Beca drops her head to the door, ignoring the way it thumps against the wood.

Chloe brushes Beca's hair back, mouth ghosting its way from collarbone to ear, teeth almost but not quite grazing the sensitive skin.

"I wanna, li-li-li-lick you from your head to your toes and I wanna move from the bed down to the down to the to the floor," Chloe whispers against Beca's ear, and Beca tries to ignore the smell of vodka as Chloe works her way to the other ear in the same way. "Then I wanna, ah ah, you make it so good I don't wanna leave but I gotta kn-kn-kn-know what what's your fan-ta-ta-sy?"

Beca risks tilting her head down for a look at Chloe and it takes all she has not to kiss the seductive smirk off her mouth.

"You're the worst," Beca mutters half-heartedly, and Chloe just laughs, nuzzling her face into the crook of Beca's neck and ignoring the blue paint that rubs off on the collar of her shirt.