Justin Bieber mania hit fever pitch at the LA premiere of his new 3D movie Never Say Never.

Anyone who is anyone turned out to see the movie including Will Smith, Will.i.am, Chris Brown, Leona Lewis and Kylie. Usher, who signed Bieber to Island Def Jam records in 2009, was also there with his two children.

On the film, JB said: "They are going to see that I'm a regular 16-year-old, who is living my dream. I want the movie to be a positive influence for others just to see that anything is possible and never give up on a dream."

He then tweeted after the premiere and said: "When Will Smith looks at you and says, 'I know movies and that's a hit movie,' you just feel good."

Justin Bieber: Never Say Never is out in the UK February 18.