Best Celebrity Halloween Costumes of 2013

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Leave it to newlyweds Dax Shepard and Kristen Bell to have the most Halloween fun! Bell dressed up as Game of Thrones' Daenerys Targaryen this year, while Shepard went as Khal Drogo. And clearly, the costumes were planned well in advance. "I fully realize I'm two years late, and I'm not going to apologize for it, but I think I'm going to be Khaleesi from Game of Thrones," Bell told Huffington Post in October about her holiday dress-up plans. "It's mainly revolving around the fact that Dax wants to be something shirtless, so Drogo is his main pick."