Nickelodeon's 25th Kids' Choice Awards

Singer Justin Bieber accepts the Favorite Singer award onstage at Nickelodeon's 25th Annual Kids' Choice Awards held at Galen Center in Los Angeles, California. (GETTY/GALLO)

US first lady Michelle Obama (L) presents The Big Help award to singer Taylor Swift at Nickelodeon's 25th annual Kids' Choice Awards in Los Angeles, California March 31, 2012. The honor, bestowed on Obama two years earlier for her work with kids fitness and health, goes to a celebrity who has devoted time and energy to charitable causes. Swift was singled out for her work to stop bullying and for providing aid to tornado victims in the southern United States. (REUTERS)

Actress Sarah Hyland poses as she arrives at Nickelodeon's 25th annual Kids' Choice Awards in Los Angeles, California. (REUTERS)

Actress Victoria Justice poses as she arrives at Nickelodeon's 25th annual Kids' Choice Awards in Los Angeles. (REUTERS)

Singer Nicki Minaj greets fans on stage at Nickelodeon's 25th annual Kids' Choice Awards in Los Angeles, California. (REUTERS)

Actor Adam Sandler accepts the Favorite Movie Actor award at Nickelodeon's 25th annual Kids' Choice Awards in Los Angeles, California. (REUTERS)

US first lady Michelle Obama (R) is greeted by host Will Smith on stage at Nickelodeon's 25th annual Kids' Choice Awards in Los Angeles, California. (REUTERS)

Actress KeKe Palmer poses as she arrives at Nickelodeon's 25th annual Kids' Choice Awards in Los Angeles, California. (REUTERS)

WWE Diva Kelly Kelly poses as she arrives at Nickelodeon's 25th annual Kids' Choice Awards in Los Angeles, California. (REUTERS)

Singer-actress Selena Gomez arrives at Nickelodeon's 25th annual Kids' Choice Awards in Los Angeles, California March 31, 2012. Gomez, 19, was named favorite female singer for her work with pop band The Scene, as well as favorite TV actress in the "Wizards of Waverly Place". (REUTERS)

Actress Kristen Stewart arrives at Nickelodeon's  25th annual Kids' Choice Awards in Los Angeles, California  March 31, 2012. "Twilight" star Stewart, 21, was named favorite movie actress at the award. (REUTERS)

Actress Ashley Tisdale arrives at Nickelodeon's 25th annual Kids' Choice Awards in Los Angeles, California. (REUTERS)

Actress Jada Pinkett-Smith (L) and her daughter Willow arrive at Nickelodeon's  25th annual Kids' Choice Awards in Los Angeles, California. (REUTERS)

Singer Katy Perry arrives wearing a 'slime' inspired top at Nickelodeon's 25th annual Kids' Choice Awards in Los Angeles, California. (REUTERS)

Singer Katy Perry reaches to greet fans as she arrives at Nickelodeon's 25th annual Kids' Choice Awards in Los Angeles, California. (REUTERS)

Actress Emma Stone arrives at Nickelodeon's  25th annual Kids' Choice Awards in Los Angeles, California. (REUTERS)

Singer-actress Selena Gomez arrives at Nickelodeon's 25th annual Kids' Choice Awards in Los Angeles, California March 31, 2012. Gomez, 19, was named favorite female singer for her work with pop band The Scene, as well as favorite TV actress in the "Wizards of Waverly Place". (REUTERS)

Singer Justin Bieber accepts the Favorite Singer award onstage at Nickelodeon's 25th Annual Kids' Choice Awards held at Galen Center in Los Angeles, California. (GETTY/GALLO)

Actor Chris Colfer (C) and model Heidi Klum (L) are slimed on stage at Nickelodeon's 25th annual Kids' Choice Awards in Los Angeles, California. (REUTERS)

Singer Taylor Swift (R) talks to actress Selena Gomez at Nickelodeon's 25th annual Kids' Choice Awards in Los Angeles, California. (REUTERS)

Actress Halle Berry attends Nickelodeon's 25th annual Kids' Choice Awards in Los Angeles, California. (REUTERS)

Members of boy band Big Time Rush pose as they arrive at Nickelodeon's  25th annual Kids' Choice Awards in Los Angeles, California. (REUTERS)

US first lady Michelle Obama and her daughters Sasha (L) and Malia (R) attend Nickelodeon's 25th annual Kids' Choice Awards in Los Angeles, California. (REUTERS)

Actress Jennie Garth (R) and her daughter Luca Bella Facinelli arrive at Nickelodeon's 25th annual Kids' Choice Awards in Los Angeles, California. (REUTERS)

Actor Nick Cannon arrives at Nickelodeon's 25th annual Kids' Choice Awards in Los Angeles, California. (REUTERS)

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