The 25th ever Nickelodeon Kids' Choice Awards went down in LA on Saturday with Will Smith presiding as host. The first famous face to get slimed was Halle Berry, who was doused in green goo. Big honors went to 2012 butt-kicker Taylor Lautner, and Selena Gomez won favorite TV actress. Adam Sandler was crowned favorite movie actor, and Katy Perry also took home gold. First Lady Michelle Obama was on hand to present the "Big Help" award for charity endeavors to Taylor Swift. Michelle's two daughters, Sasha and Malia, were in the audience to watch. Kristen Stewart wore Stella McCartney to take the stage and accept her favorite movie actress award, while other presenters included Robert Downey Jr., Josh Hutcherson, Chris Rock, Andrew Garfield, and Emma Stone.