Kristen Stewart opens up to British Vogue about her image.

"I know 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," the On the Road actress explains. "But, dude, honestly? I can't. People expect it to be so easy because there you are, out there, doing the thing that you want and making lots of money out of it."

"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!"

Stewart will make her first red carpet appearance Thursday at the Toronto International Film Festival to promote On the Road.

"She isn't sleeping and she stays up all night crying," a source recently told Us Weekly of Stewart, who is desperate to get back together with Pattinson, 26. "She's close to a total meltdown."