Jennifer Lawrence is really on top of the world these days. The actress seems to have gone to a Billy Joel concert last night, but unlike the rest of us, she didn't watch it from the cheap seats. No, she went out onstage with new BFF Amy Schumer during "Uptown Girl" and danced barefoot on top of his piano at his concert at Wrigley Field in Chicago. Because why wouldn't you do that? The footage was captured by "Inside Amy Schumer" writer Kyle Dunnigan. Schumer's sister Kim Caramele also filmed some footage of the shenanigans, including the duo joining in a can can line at the same show. Watch the video below, and just pretend you're out there with them.