Kristen Stewart has a stalker.

She told Britain's Elle magazine: "I have one crazy stalker. It's not worth changing my number for, I'm pretty certain that it's some girl who got my number from someone I went to school with who's like, 'I've got Kristen Stewart's number.' "

Despite her worldwide fame, Kristen - who is dating her 'Twilight' co-star Robert Pattinson - tries to live as normal life as possible but admits it's sometimes hard because she is always in the public eye.

She said: "It's so weird, that you have to be worried about seeing things. You want to be excited about something, normal people can be excited about their lives, and I am, too, but it's such a different thing. It comes out as entertainment for other people and that makes me want to throw up."