Justin Bieber

Johnny Depp attends Justin Bieber concert

The actor tried to keep a low profile backstage at the gig in Miami on Saturday night but blabbermouth Bieber couldn't wait to tell all of his fans that the star was there. 'Johnny Depp wants to hear Baby,' the teen singer told the audience at the American Airlines Arena. Johnny is well-known for his love of music but he's usually favours indie bands over pint-sized pop stars.

The Pirates of the Caribbean star plays guitar in his spare time and contributed to Oasis' song Fade In-Out, along with the soundtracks to the films Chocolat and Once Upon a Time in Mexico.

He also reportedly turned down £5million to star in a Japanese soft-drink advert so he can play a gig with his favourite band, Babybird. Depp was also rumoured earlier this year to be working on a documentary about Rolling Stones guitarist Keith Richard.