Kristen in J. Mendel dress New York - Arabstoday   Kristen Stewart shows some leg in a J. Mendel dress at the premiere of The Twilight Saga: Breaking Dawn- Part 1 held at Nokia Theatre L.A. Live on Monday night (November 14) in Los Angeles. The 21-year-old actress was joined by her beau, Robert Pattinson. Stewart and Pattinson didn't disappoint as they made a stunning arrival for the world premiere. The 21-year-old actress wowed the crowd in a daring purple sequinned gown by J Mendel slit to the thigh, which showed off her never-ending legs. Kristen paired her risque look with some black suede peeptoe platform pumps and wore her dark brunette locks hair in a messy updo while her eyes were made-up with a sultry smoky shadow. Kristen recently dished about the sex scene between her character, Bella, and Rob’s character, Edward! “It’s not a beginning-to-end sex scene; it’s memories, it’s nice,” she said. “So because of that, I never really got to shoot, we didn’t shoot a sex scene. It was all close-ups and such.”