Kristen Stewart has given her first interview since recent media revelations about her private life to British Vogue.

The Twilight star appears on the cover of the fashion tome's October issue, and talks about fame and her public image.

The actress said: "I know that if you haven't thought about how you want to present a very packaged idea of yourself then it can seem like you lack ambition. But, dude, honestly? I can't.

"People expect it to be easy because there you are, out there, doing the thing that you want and making lots of money out of it. But, you know, I'm not that smooth. I can get clumsy around certain people.

"Like if I were to sit down and think, 'OK, I'm really famous, how am I going to conduct myself in public? I wouldn't know who that person would be! It would be a lot easier if I could, but I can't."

Stewart's full interview will appear in British Vogue's October issue which is on sale Monday, September 10.