The former Pussycat Doll singer will star in the Lord Andrew Lloyd Webber and Tim Rice rock musical alongside Tim Minchin as Judas Iscariot, which will open this summer at London's The O2 arena.
The lead role will be played by the winner of the ITV1 show, 'Superstar', which has former Spice Girls singer Mel C, as well as Jason Donovan and casting expert David Grindrod assisting Webber, reported Femalefirst.
"We had a boy in from New Zealand; a boy from Israel; we had somebody come in from Lithuania. I mean it was extraordinary where people are coming from and I think we've had 3,000 people in to audition for the role, including a few girls - one girl who was very, very good and was really terrific," said Webber.