Ashley Greene was the lucky lady in a one-of-a-kind Donna Karan dress at this evening's Costume Institute Gala in NYC. She pulled back her long locks to let the gown be the center of attention as she stepped out onto the red carpet. Ashley isn't the only Twilight star at the event tonight, as Kristen Stewart will be making a repeat appearance at the event. Both girls look gorgeous when they are dressed to the nines, and today fans were also excited to see them in the newly released Breaking Dawn photos, showing scenes from Edward and Bella's wedding and honeymoon. For the moment, however, it's all about Ashley, Kristen, and the rest of the beauties celebrating Alexander McQueen's legacy. What do you think of her look? Weigh in on Ashley and all the rest of the 2011 Met Gala red-carpet pictures with Fab and Bella's live love it or leave it polls.