Lady Gaga & Bradley Cooper Surprise Las Vegas Audience With Live "Shallow' Duet

Bradley Cooper joins Lady Gaga onstage in Las Vegas for surprise performance
of 'Shallow' from A Star Is Born

Lady Gaga stunned her Las Vegas audience with a surprise guest during the finale of her Lady Gaga Enigma show at the Park Theater at Park MGM last night.

As she got ready for her finale, her A Star Is Born director and co-star - Bradley Cooper - appeared onstage for the first live performance of their film duet, "Shallow."

The song has already been honored at the Golden Globe and Critics’ Choice Awards.

The movie received 8 Oscar nominations this week, including two for Gaga (Best Actress and Best Original Song) and a Best Actor nod for Cooper.

Also making the Oscar list for A Star Is Born is Sam Elliott (Best Supporting Actor), Best Adapted Screenplay, Best Cinematography, Best Sound Mixing, and Best Picture.

Cooper was snubbed in the 'Best Director' category, which is appalling since the entire endeavor was his vision.

I enjoyed Gaga in the film, but I thought Cooper was sensational.

Watch the performance below.