Fortnite's crossover with Alien is now live, and it includes skins for both Ripley and a Xenomorph for you to squeeze into.
The video below shows Fortnite's Agent Jonesy rifting in to save the day, while holding Jonsey the cat (no relation), then presumably transferring the characters into Fortnite's lucrative item shop.
Ripley comes with Jonesy in a Weyland-Yutani Cat Carrier. She and Xenomorph both cost 1500 V-Bucks, or there's a bundle for both priced at 2220 V-Bucks.