Katy Perry and One Direction rock at Kids' Choice Awards, Justin Bieber gets slimed

While Justin Bieber, named Favorite Male Singer at Saturday's Kids' Choice Awards, got the biggest slim of the night along host Will Smith at the end of the event, he wasn't the only celebrity to get slimed. Some slime treatment were also given to Hale Berry, Glee star Chris Colfer, Taylor Lautner amongst others. First Lady Michelle Obama, who was on hand to present Taylor Swift with the Big Help Award, however, was safe from the slime.

Here's the complete list of winners at the Nickelodeon's KCA on Saturday:

Favorite Movie: "Alvin and the Chipmunks: Chipwrecked" Favorite Animated Movie: "Puss in Boots" Favorite Voice from an Animated Movie: Katy Perry ("The Smurfs") Favorite Movie Actor: Adam Sandler ("Jack and Jill") Favorite Movie Actress: Kristen Stewart ("The Twilight Saga: Breaking Dawn, Part 1") Favorite TV Show: "Victorious" Favorite TV Actress: Selena Gomez ("Wizards of Waverly Place)" Favorite TV Actor: Jake Short ("A.N.T. Farm") Favorite Cartoon: "SpongeBob SquarePants" Favorite Reality Show: "American Idol" Favorite Male Athlete: Tim Tebow Favorite Female Athlete: Danica Patrick Favorite TV Sidekick: Jennette McCurdy Favorite Butt Kicker: Taylor Lautner Favorite Video Game: Just Dance 3 Favorite Book: "Diary of a Wimpy Kid" series Favorite Song: "Party Rock Anthem" by LMFAO Favorite Music Group: Big Time Rush Favorite Male Singer: Justin Bieber Favorite Female Singer: Selena Gomez

But the winning wasn't over for Canadian popstar, Justin Bieber who won on Sunday night, April 1st the Juno Fan Choice Award. Congrats! Bieber wasn't on hand to accept his award, but he did shoot over a pre-recorded message for his fans. In his heartfelt speech, he told Beliebers, "As we all know I have the best fans in the world. So this goes out to the fans, you might as well give it to yourself."

Entertaining the night at Nickelodeon's KCA were Katy Perry and Biritsh boyband One Direction. Perry went medieval in her stage act, complete with the sword and the shield, while the Brit boys got extremely close to the studio audience. She performed her latest single Part Of Me. She entered the stage through the air over the crowd, clutching a sword. Her dancers were all dancing in medieval garb including the armors. A big shield with a glowing heart in the center was aimed at the audience. The performance had a dramatic turn when Perry grabbed the king, put him in a torture device and smashed a pie on his face.As soon as she completed her performance, host Will Smith went up the stage to hand over a blimp to the singer for winning Favorite Voice from an Animated Movie. "Thank you so very much!" Perry said. "Listen: The only reason why I'm still here today, and remember this, is because I've never grown up! Thank you so much for this. I love you, and I can't wait to do 'Smurfs 2'."