Rachel Bilson and Michelle Trachtenberg both attended the annual Whitney Contemporaries' Art Party and Auction at Skylight Studios in NYC this week... but who looked better?

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Love the bag, love the shoes, love the dress... hey, we love Rachel!

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But that hair? Uh, no. This isn't the Palace of Versailles!

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Dare we say that Michelle actually looks, like, hot? You're rockin' that dress, girl!