LOS ANGELES -- In one of the most anticipated performances of the night, Lady Gaga and Bradley Cooper took the Oscars stage, with no introduction, and began singing "Shallow." The A Star Is Born ...

If you thought the duet between Lady Gaga and Bradley Cooper during Sunday's Oscars was more than just a performance, you wouldn't be the only one.

It's been months since Lady Gaga and Bradley Cooper wowed the Oscars audience with their "Shallow" performance, but Gaga is still addressing rumors that she and her co-star were romantically involved.

LAS VEGAS -- Bradley Cooper made a surprise appearance during "A Star is Born" co-star Lady Gaga's show Saturday night for a surprise performance of "Shallow," the film's chart-topping single.

Lady Gaga is scheduled to perform "Shallow" at the Oscars next month, but she got in a little early practice with her "A Star is Born" costar Saturday night. Gaga brought Bradley Cooper on stage ...

Screen star Bradley Cooper thinks Lady Gaga’s terrific and is raring to team up for a new movie project, but insiders say his jealous model girlfriend, Gigi Hadid, keeps throwing a wrench in the ...