Another Halloween has come and gone in Hollywood, but the fun isn't over yet! The costumes were especially fun this year from the spooky to the sexy and of course a lot of silly ones as well. Heidi Klum's party was star-studded as usual, but that wasn't the only bash with dressed up famous faces. Celebrity kids were trick-or-treating all over town looking cute and mostly cuddly. From Jay-Z to Rihanna, Jessica Alba, the Obamas and tons more — check out the best celebrity Halloween costumes here!