Vanity Fair Tribeca Film Festival Party Celebrities 2012

Leave it to Vanity Fair's Graydon Carter to transform the State Supreme Courthouse in downtown Manhattan into a gorgeous lit-up, ultrafestive space, perfect for kicking off the 11th annual Tribeca Film Festival. To fête the occasion, a plethora of celebs, including founder Robert De Niro and wife Grace Hightower, mayor Michael Bloomberg, and Katie Couric showed up in their Tuesday evening best, and we were there to snap up all the action. Didn't catch all the looks on Instagram last night? No problem. From Dakota Fanning's hot pink Lanvin number to Leelee Sobieski's crisp white Jil Sander gown, we've rounded up the best filtered-photo moments. Click through to get an on-the-scene look at model Jessica White, Ivanka Trump, and more; then, be sure to check back later for a complete celebrity-outfit rundown in today's Fab Flash.