[Video] Lady Gaga joined by Bradley Cooper on stage in Las Vegas

The singer, who received an oscar nomination for the movie A Star Is Born was on stage with her co star Bradley Cooper during her show in Las Vegas. Lady Gaga, who starts a two year residency at the MGM Park Theater in Las Vegas gave a beautiful surprise to her fans on saturday with the visit, on stage of the actor. And it’s full of emotion that the two sang together the famous song from the movie A Star Is Born : Shallow.

Let’s enjoy the moment: