Sandra and Louis Bullock in Toy Story Costumes | Pictures

Sandra Bullock held hands with her little man Louis last night leaving a Halloween party in LA. Louis stepped out in a Buzz Lightyear costume while Sandra dressed as Cowgirl Jessie, both popular characters from the Toy Story franchise. They were just two of the famous faces who celebrated Halloween. Across the pond, Gwen Stefani and Kate Moss got into the spirit of the holiday while other stars like Rihanna, Robert Pattinson, and Kristen Stewart partied in LA. The spookiest holiday of the year has come and gone, but before you pack up your spiderwebs, cat ears, and fake blood, be sure to check out our roundup of this year's best celebrity costumes!