Justin Timberlake was terrified about starring alongside Sharon Stone and Bruce Willis in his new film.

The 'SexyBack' singer, who stars with the two Hollywood heavyweights in 'Alpha Dog', had to work hard to convince his A-list co-stars he had talent.

He revealed: "When I came on to this film, all the other actors were probably not looking forward to having to deal with me. But I just showed up to work same as everybody else. I just wanted to be a player in the film."

Although he is venturing into acting, the 25-year-old star is not prepared to quit his pop career and become a full-time film star.

He added: "To me, acting is a hobby. I've been lucky enough to have a musical career that has gone pretty good and acting is something I have always wanted to do. I've been offered a lot of different things but 'Alpha Dog' was an opportunity for me to sink my teeth into something. I thought it was a story people should hear."

'Alpha Dog' is based on the true story of a Los Angeles gang.

In the movie, Justin plays Frankie Ballenbacher - a young criminal who tries to prevent the gang from murdering someone.

Taken from M&C