There's nothing stars love doing more than celebrating themselves and one another. And that's why right now is prime celeb happiness time. It's awards season, culminating this Sunday night with the Oscars, and famous folk have been out in full force at various celebratory parties and events hosted by Eva Longoria, Vanity Fair and the like. Still, just because there's a reason for the season doesn't mean that everyone's got their sartorial ducks in a row. (We're looking at you, Jessica Chastain). Click through to see who hit it, and who's just a mess.