Tom Cruise asked Jon Bon Jovi for advice on playing a rock star in 'Rock of Ages'.

The 'Mission Impossible' actor was nervous about portraying tattooed musician Stacee Jaxx in the movie version of the musical, so sought advice from the 'Livin' on a Prayer' singer - one of the real life rockers his character is based on.

Jon said: "He and I actually went out and he was very intense about 'how do you do this?'

"I said, 'Relax man, you're Tom Cruise, you can learn how to sing a song, don't worry about it!'

"Knowing Tom Cruise from afar, everything that he does, he does to 11."

Jon, 49, added he is "curious" to see the results – which will include Tom taking on his band's hit 'Wanted Dead or Alive' – but isn't worried the actor will be playing a part which will caricature his own onstage persona.

He added to website Extra: "I'm pleased, I'm curious. I don't think that he's gonna be worried about duplicating my things - it'll be an amalgam of stuff. In the meantime, I think it's pretty neat."