Jennifer Lawrence says her best moment in 2015 was getting drunk and dancing on Billy Joel's piano

To the casual observer, Jennifer Lawrence has had a pretty terrific year.

The actress climbed to the very top of Hollywood's young A-list, fought for gender equality in Hollywood, and finished off her enormous "Hunger Games" franchise, leaving room for many more milestones to come.

But none of those was her favorite moment of 2015.

That honor, the actress tells Entertainment Weekly in a new interview, goes to the time she hung out with comedian and friend Amy Schumer and got onstage at a Billy Joel concert.

"I think the best thing that happened this year was when my friend Amy and I got so drunk that we ended up on the top of Billy Joel's piano," she told EW. "So just to explain further, we were on Piano Man's piano."

"Amy is the s--t," Lawrence continued. She explained that Schumer was invited to appear at the concert, but insisted that Lawrence join her.

Lawrence and Schumer danced atop Joel's piano at his Wrigley Field concert in Chicago, reenacting the "Uptown Girl" sequence from Schumer's "Trainwreck." The comic provided video evidence on Twitter.

Uptown girls pic.twitter.com/zBY0q1wVB1

- Amy Schumer (@amyschumer) August 28, 2015