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Jennifer Lopez, Emma Stone and more had double the fashion fun, but which was the winning look? Weigh in now!
Credit: Jason Merritt/Getty; Scott Kirkland/PictureGroup
Updated: Monday Feb 27, 2012 | 12:00 PM EST
By: Zoë Ruderman
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The Descendants star revealed she's "obsessed" with her Valentino Couture gown, adding, "I love that it's long-sleeved!" But later, she donned a floral mini (also long-sleeved) and matching lime pumps to party.
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