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Keeping it simple and fun is Jessica Alba’s impeccable representation (thanks to her baby bump) of the lead character from Juno. She teamed up with her BFF Kelly Sawyer to complete the look.
High School Musical star Ashley Tisdale looked stellar and elegant in her effortless recreation of Maddie Ziegler from Sia’s Chandelier video.
Stealing the show was Vanessa Hudgens with her truly creepy, yet glam, in her American Horror Story themed costume.
Not your classic couple's costume! Gwyneth Paltrow sported a head-in-the-box look giving a major throwback to her role in the iconic 1995 thriller Se7en, with her boyfriend Brad Falchuk as Kevin Spacey's terrifying character, John Doe.
Inspired by Poison Ivy in Batman, Rita Ora looked totally gorgeous in her costume.