Get 30 Days Free of PEOPLE
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
More from PEOPLE
See More News
Sacha! Michelle! George! See how the stars cut loose before the big show
4 of 6
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.
Copyright © 2014 Time Inc. All rights reserved. Reproduction in whole or in part without permission is prohibited.
In partnership with AOL