Snooki has been the most popular celebrity costume this year. Snooki costumes were featured on nearly ever network day show. Joan Rivers dressed up as Snooki. Ellen DeGeneres dressed as Snooki's poof. Even Vinny Guadagnino from the Jersey Shore dressed up as Snooki. Ronnie Ortiz-Magro dressed as Pauly D. The two appeared in costume on MTV's The Seven. Take a look: