But instead of getting an early night before tonight's Twilight Saga: Eclipse premiere in LA, Kristen Stewart was out on the town last night supporting another movie. Looking uber-glam in a black, bandeau mini-dress with a diamond-encrusted neckline and jewelled daggers down the sides, the 20-year-old stole the show on the Love Ranch red carpet.

Twilight Saga: Eclipse's Kristen Stewart wowed at the Love Ranch premiere in an LBD

Although she doesn't star in the movie - British legend Helen Mirren does - K-Stew sent the crowds at the Arclight Theatre into a frenzy, teaming her mini with killer black peep-toe, platform stilettos.Robert Pattinson's beau looked relaxed and happy at the event, smiling at snappers and posing with the film's cast on her way in to watch the film - which is probably due to the fact that she wasn't in the limelight for once. The brunette attended the premiere out of support for the movie, which has been made by E1 Entertainment - who make all the Twilight films.

Twilight Saga: Eclipse's Kristen Stewart posed on the red carpet with the Love Ranch cast

Must have been a nice, chilled-out evening for Kirsten before tonight's big event - which, seeing as fans have been camping out for days, is sure to be pandemonium.