>> Dakota Fanning, Lily Cole, Helena Christensen, and Diane von Furstenberg were among those who turned up to celebrate the start of the Tribeca Film Festival at Vanity Fair's annual kickoff party Tuesday night. Held at the New York State Supreme Courthouse — the steps of which glowed with thousands of tiny LED lights — the event was filled with nearly as many striking styles as it was big-name stars. Helena Christensen, Tory Burch, and Leelee Sobieski looked Spring-perfect in crisp white dresses; Sobieski, in a full-skirted Jil Sander gown, was especially stunning. Dakota Fanning looked charming in a hot pink Pre-Fall 2012 Lanvin cocktail frock, while even a leg injury and crutch couldn't stop Donna Karan from looking the picture of elegance in black layers and sculptural jewels. See all those — plus more of the evening's best looks — right here, in the slideshow.