Jennifer Lawrence always keeps us laughing, and her appearance on "The Tonight Show" was no different!

The hilarious "X-Men: Days of Future Past" star entered the stage with a long blonde beard, and played Jimmy Fallon's favorite game, Box of Lies. Join the fun by watching the clip below!

Lawrence opted for a Victoria Beckham dress and Jimmy Choos heels, with her growing locks parted to the side. She stole the show, however, with a long blonde beard, taking a jab at her biggest hair critics!

"Everyone is talking about how Jennifer Lawrence is growing her hair out a little bit, so I wanted to show everyone that I grew my chin out a little bit, Hollywood style," the actress said.

They also discussed a recent awkward encounter involving "American Idol" host Jennifer Lopez at a charity event.

"You had some scheme and it was crazy," Fallon told Lawrence.

"You wanted to dance with Jennifer Lopez and you wanted me to go over and dance with her, too."

"We came up with this idea together," Lawrence fired back.

"We both saw J.Lo, and this was like 10 Jello shots in. And I've never done jello shots-I didn't go to college. So we were dancing and we J.Lo and were like, 'Well, we gotta get J. Lo to dance!' So I was like, 'We'll do a spin, and then we'll go, 'Dance with us!'"

It turns out the two wanted to convince the "Dance Again" singer to participate in a choreographed dance.

"You made me look like a freak in front of J.Lo! Do you know what that feels like?" the funny blonde asked Fallon.

"She was like, 'I think I'm just gonna observe."

After clearing the air they went on to play "Box of Lies," a game Fallon originally played with Tina Fey. Here is a clip of what it entails, get ready for lots of laughter!

"X-Men: Days of Future Past" hits theaters May 23. Will you go see it? Let us know why or why not below!