Lady Gaga and Bradley Cooper surprise fans with live ‘Shallow’ duet

During Lady Gaga’s Las Vegas residency “Enigma” show Saturday night, the pop star surprised fans by bringing out a special guest.

Bradley Cooper, Gaga’s “A Star Is Born” costar, joined the Grammy-winning singer on stage to perform the duet “Shallow” from the Oscar-nominated film produced and directer by Cooper.

It was the first time the pair had performed the song together in a live setting.

The hit “Shallow” has garnered critical acclaim, winning the original song category at this year’s Golden Globes and the Critic’s Choice Movie Award for song. It’s also a contender for original song at next month’s Academy Awards and for song of the year at the Grammys.