Many bodies, many possibilities

"I thought they'd hold a conference about possible extraterrestrial biosignatures in spectroscopic readouts at a place like Roswell or something," Jason said.

Carrie chuckled as she turned the car off the freeway, following the GPS route into Las Vegas. "I don't know if you've ever actually been to Roswell, but once you visit the UFO museum, you've kind of visited it all. Trust me, Vegas will be way more fun."

Jason didn't disagree, of course, especially knowing who else was along for the ride! He glanced down at Carrie's chest, her seatbelt heavily digging into her cleavage as they drove. Unconsciously, Carrie reached up to lightly massage one of her breasts, giving herself a squeeze. Jason wasn't fully sure, but he assumed that was one of the many little tricks the alien had over their host body, and he was convinced that this whole trip, the alien was making sure to tease Jason via Carrie--little squeezes, bending over so her panty lines were visible through her tights, or occasionally just 'accidentally' bumping into Jason, giving him brief touches of her body. They were little, but they all added up. Carrie was clearly conscious throughout but didn't pay those little activities much mind.

Maybe the alien was trying to distract Jason from thinking about all the bodies that were going to be available for the alien to take. He'd originally envisioned conference members, like a bunch of nerdy scientists that couldn't compete with Carrie in the looks department, but this opened up so many possibilities while the conference was ongoing! People gambling, ladies celebrating the big twenty-one for their birthdays, the lovely dealers at the high-stakes tables, in addition to people attending the conference, and even Carrie's family that were flying in as well. Everyone was here to drink, gamble, and talk about trace amounts of methane in exoplanetary atmospheres.

Carrie parked at the Luxor, checking in and tapping on her phone to let her friends and family know she'd arrived while Jason listened to the delightful beeps and bells of the casino floor. The conference started tomorrow, so there was plenty of time to have an evening to enjoy themselves. "I hope it doesn't feel like I'm abandoning you, Jason," Carrie said as she tapped on her phone. "You're welcome to come to the conference and spend time with me and family of course, but I figure you wouldn't mind being let loose in Vegas. Just make sure to wish me luck before my speech! ...Oh, oof, one moment."

Carrie looked suddenly uncomfortable, heading into the nearby bathroom. Jason waited patiently with her luggage, thinking that maybe that fast food place they stopped for lunch wasn't the best idea. When Carrie walked back out, something was clearly different, however: her chest had shrunk, by a considerable amount. Jason figured now that Carrie was likely around a C-cup from the looks of her--a perfectly average pair without the presence of an alien. Carrie wandered back up to Jason. "Wow, that just felt weird, had to cough something up. Let's skip Greaseburger on the drive back."

"Not a bad idea," Jason said absent-mindedly, looking around for signs of an alien presence, but it seemed like wherever the aliens that could become 'Alice' had vanished before anyone else could see Carrie and start asking questions about if her boobs were massive enough to have their own gravitational pull. "Yeah, I'm gonna go get settled in, I'll see you tomorrow before the conference."

Carrie grabbed Jason for a quick hug. "Sure thing, thanks again for coming with me, made the trip less lonely. Oh, gotta go!" Carrie took her luggage and ran over to another duo of women: her mother, Cathy, and her sister, Claire. Jason only got a quick glance at the two as he made his way up to the room, but he could see the family resemblance. Cathy had that larger, motherly frame with boobs that naturally had rivaled what Carrie's had been with the alien in them; Claire was attending college, and didn't seem so blessed with the breast genes, though she looked like she had a very lovely face and an even more outgoing attitude than Carrie.

As Jason headed up the stairs, he wondered about so many things about how this conference might play out. Who would the alien end up inside? What would the alien make them do? Was the alien going to just control them directly, or more of this influencing stuff? Or could the alien do even more with their powers, and he hadn't even started to imagine what he was in for?

Wandering past the hotel room doors a few floors up in the pyramid building, able to look over the edge down at the casino floor and elsewhere, Jason spotted a variety of people who might also be in for the conference: some important-looking woman with amazing curves berating what was likely an intern working for her, a wire-thin girl trying to keep up with something on her tablet; a group of nerdy-looking people wearing alien print clothes off to hit the casino floor; a girl who looked shockingly like someone he knew from school that always gave him grief, realizing that she was an astrophysics major too so that actually could be her; people of all shapes and sizes that Carrie ran into to chat with below, she was in a whirlwind of conversations and wouldn't be able to make it to her own room anytime soon.

Jason entered his hotel room, getting his stuff put away. He didn't like the unknown of where the alien might be, but the alien had overheard his room number, and so he pretty much decided to have the first afternoon to himself, play some slots and cards, chat with others, find a few women that caught his eye that maybe he could convince the alien to take over for a day, and so on. He had a fine time to himself, though he missed spending time with Carrie a bit, since she'd been the only human contact he'd had for the past couple weeks, it was strange to not look over and see her working on studying a star chart or something.

A few hours later, down fifty bucks and filled with rum and colas, Jason returned to his room, collapsing onto the bed, having forgotten all about the alien as he thought about how he had such a wonderful hot streak with the dice, and then terrible fortune at blackjack. So, when he heard a knock on his door, he didn't even register who it might be. Jason stood up, wandered to the door, and looked through the little peephole.

Two glowing, green eyes stared right back at him. The alien had found their body for the night, and the alien wanted in.