She's famous for being a pop diva and she co-starred in American Horror Story in the 2015-16 edition of the TV anthology.
Now Lady Gaga has proved that she's got what it takes to lead a major movie.
The cast of A Star Is Born got an eight-minute standing ovation for its premiere at the Venice Film Festival on Friday.
It's a hit: Lady Gaga and Bradey Cooper got an eight-minute standing ovation at the Venice Film Festival where it had its world premiere on Friday
And the gushing tributes continued online for the 32-year-old and her co-star and first-time director Bradley Cooper, 43.
For audiences familiar with Gaga's high-concept outfits and extraordinary hair and make-up, she is barely recognizable as Ally the girl-next-door who has given up on a music career until she is discovered by Bradley's grizzled rock star Jackson.
'Given the extravagance of the pop star´s usual costumes, it´s almost like you´re seeing her for the first time,' wrote IndieWire's Michael Nordine.
'She instantly makes you believe in her Ally as a no-name talent despite already being one of the most successful singers on the planet. Unassuming but obviously special.'
Walking the red carpet: Lady Gaga wowed in a pink feather gown while Bradley Cooper suited up for the film's performance which has been extremely well received by critics
'Gaga completely sheds her pop persona and exhibits a scrubbed-clean, relaxed appeal and a deft