Bradley Cooper joins Lady Gaga to perform 'Shallow' in Las Vegas

7:39am PST - January 27th, 2019    bradley cooper - Mashable

Jackson Maine — er, uh, Bradley Cooper — joined Lady Gaga onstage Saturday night for a surprise performance of "Shallow," the duo's hit song from A Star Is Born. Cooper was in the audience for Gaga's Enigma residency in Las Vegas, and the crowd enjoyed a nice…