Lady Gaga Brings Bradley Cooper on Stage to Sing "Shallow" in Vegas

A Star Is Born might have come up empty at Sunday's SAG Awards, but the movie's main characters still managed to come to life over the weekend. 

Related: 2019 Oscars: 'Bohemian Rhapsody', 'A Star Is Born', and All the Nominees

During a performance of Lady Gaga's Las Vegas residency show ENIGMA on Saturday, the "Bad Romance" singer called up her co-star Bradley Cooper for a performance. Flipping the script of the film, Gaga called upon Cooper to sing "Shallow" on stage, surprising him as he sat in the audience.

When you show up to see the goddess @ladygaga and you get to hear Shallow performed with Bradley Cooper...it's a pretty extra great night in #Vegas. Enigma blew my mind. Gaga gave absolutely everything she had in this show. Spectacular and worth the trip! pic.twitter.com/ZltjtDHtFg

— Kirsten (@chigurrlk) January 27, 2019

As if @ladygaga’s spellbinding 2 hour greatest hits chronicling #Enigma wasn’t epic enough, the encore involved her pulling #BradleyCooper out of the audience to duet on #Shallow. Absolutely unforgettable. @starisbornmovie @parkmgm pic.twitter.com/7nnLpRKf76

— Richard (@RichardReflects) January 27, 2019

Gaga and Bradley did that ---- #ENIGMA pic.twitter.com/NwwCp8R3nV

— Francis (@wthfrancis) January 27, 2019

A Star Is Born is nominated for Best Picture, and both Gaga and Cooper are nominated for their roles in the film at next month's Academy Awards. "Shallow" is also nominated for Best Original Song. The film failed to take home any awards at Sunday's SAG Awards, with the Black Panther cast taking home top honors for the evening.

Lady Gaga's Las Vegas residency runs through November. You can find the full list of dates here.