Billy Joel was inspired by one famous blonde when he wrote "Uptown Girl." During his performance of the song at Wrigley Field in Chicago last night, he was joined by two.

As you can see in this fan-shot footage from the show, the night's rendition of "Uptown Girl" came with an appearance by Jennifer Lawrence and Amy Schumer, who came out onstage to do some dancing with the band — and wrap things up with a little routine on top of Joel's piano. It was Schumer's second tribute to the track this year, following its inclusion in her recent hit comedy Trainwreck.

Schumer, who's currently co-writing a screenplay with Lawrence for the two to star in together, has reportedly been in Chicago visiting her brother, musician Jason Stein. She also posted a clip on Instagram.

This marks the second time in a week Schumer's been seen onstage performing with an unlikely partner: Just a few days ago, she joined rapper Talib Kweli for a surprise duet on Kanye West's "Get 'Em High."

Joel, meanwhile, has welcomed a string of special guests to his live shows in recent weeks — including Paul Simon, who helped Joel shut down Nassau Coliseum earlier this month. The Chicago show marked his first date outside New York since he and his wife Alexis announced the birth of their daughter, Della Rose, on Aug. 12.

Joel next heads to San Francisco and Denver for a pair of shows before returning home to New York to continue his residency at Madison Square Garden, where he's scheduled to complete a handful of dates through the end of the year. For a complete list of upcoming concerts, check his official site.

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