Those lucky enough to score an invite to the Met Gala, an annual A-list fundraiser for the museum's Costume Institute, aren't called on to do much but wear something fabulous and bring a blank check. But would a little extra homework be out of the question? The 2013 gala carried the theme "Punk: Chaos to Couture." Vogue.com live-streamed the evening's red carpet arrivals, and more than a few famous folks blanked when asked about the punk movement. Here are a few of the most deliciously awkward moments.