Sandra Bullock and Neil Patrick Harris

Kristen Stewart was a big winner Nickelodeon's Kids' Choice Awards Saturday, as she took home awards for Favorite Movie Actress for The Twilight Saga: Breaking Dawn — Part 2 and Favorite Female Buttkicker for Snow White and the Huntsman.

Though Stewart admitted she was afraid to accept the awards out of fear of being slimed, she escaped mostly unscathed. The same couldn't be said for other celebrities, including Sandra Bullock, Neil Patrick Harris and Nick Cannon, Josh Hutcherson and Amanda Seyfried were covered in green goo before the night was over. Pitbull and Christina Aguilera kicked off the show with a performance, after which Pitbull was also doused with slime.

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Other notable winners included Johnny Depp for Favorite Movie Actor (Dark Shadows), The Hunger Games for Favorite Movie, Justin Bieber for Favorite Male Singer and Katy Perry for Favorite Female Singer.

On the television side, Simon Cowell won the Favorite Villain award for his role on The X Factor. Selena Gomez won Favorite TV Actress for Wizards of Waverly Place, while Austin & Ally star Ross Lynch won Favorite TV Actor. Victorious was named Favorite TV Show.

Check out a complete list of winners here.