Robert Pattinson has opened up about his past battle with depression, revealing he felt so alone when his career took off after the first Twilight movie.

The Brit admits he didn't know what to do with himself when he became an overnight sensation - and his castmates Kristen Stewart and Taylor Lautner took off to make other films.

He tells Premiere magazine, "I went through a big time of depression between 23 and 25, I couldn't go where I wanted to go, I was in the tabloids every day and I didn't have access to the roles I really wanted. I wanted more, on every level.

"I finally realised that you needed to earn this change I so desperately wanted.

"That one way or another, you had to suffer to be able to make it.

"I thought everything was going to be served on a plate but that's not how it works.

"When (director) David Cronenberg offered Cosmopolis to me, I never read anything as interesting for years. I saw Kristen leave to film Snow White and the Huntsman, Taylor was also doing his thing on the side, and I was just going in circles, asking myself if I was going to take a break and go back to music. Then one day David called and I went crazy".