And because they're Kendall and Kylie? They documented the whole thing via Snapchat. The girls were stranded - along with friends Hailey Baldwin and Jordyn Woods - for 20 minutes and used that time to take pictures of their outfits and get progressively more freaked out.
"So my worst nightmare just happened," Kylie said in one of the videos. "We are stuck in the elevator."
"We're actually stuck in an elevator in real life. I never thought this would actually happen. I'm genuinely so terrified," Kendall said in another.
Things started to get a little tense, with Kylie jokingly criticizing her sis for eating the only food they had between them: a granola bar.
"So the only food - we don't know how long we're going to be in here - but all the f*cking food we had in the elevator, you ate it all," Kylie said.
Luckily, they didn't have to wait too long before the fire department came to the rescue and brought their fashion week nightmare to an end - but not before snapping a group pic together. Kylie poked fun at the whole ordeal on Instagram later, posting a paparazzi snapshot and writing, "Fresh out the elevator like."