Cape Town – The real-life ending of A Star is Born played out on a stage.
Where in the movie Jackson called Ally on to stage the first time they sang their duet, this time Lady Gaga brought out Bradley Cooper.
The singer, who is doing her Enigma residency concert in Las Vegas, surprised fans when she invited her co-star to perform their duet, Shallow.
The pair shared a hug and Gaga helped him put in the in-ear monitors before Cooper joked, "Jackson never used these", referring to his character in the movie.
This is the first time the pair have sang the song live since the film was released.
WATCH THEIR PERFORMANCE HERE:
On Sunday the pair attended the annual SAG Awards where the movie received three nomination but didn't win any.
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Gaga and Cooper both received Oscar nominations for their roles in the drama.
Gaga took home the Golden Globe award for the song earlier this month as well as the Best Actress award at the Critics Choice.