Jennifer Lawrence & Amy Schumer Dance on Billy Joel's Piano - Watch Now!

Jennifer Lawrence and her new pal Amy Schumer are at it again!

The 25-year-old Oscar winner and the 34-year-old comedian made a very special surprise appearance at Billy Joel‘s concert last night (August 27) at Wrigley Field in Chicago.

PHOTOS: Check out the latest pics of Jennifer Lawrence

During a rendition of Joel‘s 1983 hit “Uptown Girl,” Jennifer and Amy made their way on stage side by side before hopping on top of his grand piano, where they danced barefoot.

“Uptown Girl” is featured prominently in Amy‘s hit film, Trainwreck.

Jennifer and Amy are in town together to continue writing their movie, as revealed earlier this week – Watch them in action below!