Lady Gaga had a surprise for the fans at her Enigma show Saturday night in Las Vegas -- Bradley Cooper.
The two sang "Shallow" from A Star Is Born live onstage together for the first time. (Gaga did the song live for the first time last month at the start of her Vegas residency.) Watch the performance on YouTube below!
They are clearly campaigning for an Oscar. Both were nominated as Best Actors and the song has a strong chance at winning. However, based on SAG Awards and Golden Globes, the Academy Award front-runners in the acting category must be Rami Malek and 71-year-old Glenn Close.