Lawrence visited Late Night with Seth Meyers April 21 (the interview finally aired Wednesday), and was chatting with Meyers about the 2014 Academy Awards.
"I was like, 'Okay, I'm going out for the first time,' " Lawrence said, noting that she usually doesn't go out after awards shows because she's "just so sick of people by that point."
"But this time, I was like, 'I'm going out,' " she continued. "And I puked."
"There's this big fancy party, this Guy Oseary and Madonna party – if you get invited, you're like, you know, super-important," Lawrence went on. "And I puked, on his porch."
"I was in such bad condition, and I look behind me while I'm puking, and Miley Cyrus is there like, 'Get it together.' "
Lawrence is reprising her role as Mystique in X-Men: Days of Future Past, out May 23.