A big congrats to all the winners (Click "Read More" for full list of winners — and for more pics from the big night)!
Justin Bieber had all of UCLA's Pauley Pavilion screaming!
Miranda Cosgrove accepted the award for iCarly!
Demi Lovato strikes a pose on the orange carpet.
Justin Bieber brought his mom Pattie with him — and both greeted fans!
2010 Nickelodeon Kids' Choice Award Winners
Favorite Movie: Alvin and The Chipmunks: The Squeakquel
Favorite Animated Movie: Up
Favorite Voice from an Animated Movie: Jim Carrey (A Christmas Carol)
Favorite Movie Actor: Taylor Lautner (The Twilight Saga: New Moon)
Favorite Movie Actress: Miley Cyrus (Hannah Montana: The Movie)
Favorite Song: "You Belong With Me" (Taylor Swift)
Favorite Music Group: Black Eyed Peas
Favorite Male Singer: Jay-Z
Favorite Female Singer: Taylor Swift
Favorite TV Show: iCarly
Favorite Television Actress: Selena Gomez
Favorite Cartoon: SpongeBob SquarePants
Favorite Reality TV Show: American Idol
Favorite Television Actor: Dylan Sprouse
THE BIG HELP AWARD:
First Lady Michelle Obama
Favorite Male Athlete: Ryan Sheckler
Favorite Female Athlete: Misty May Treanor
Favorite Video Game: Mario Kart
Favorite Book: Diary of a Wimpy Kid series
Cutest Couple: Jacob & Bella (Taylor Lautner & Kristen Stewart) from The Twilight Saga: New Moon
Ultimate Dance Smack-Down: Noah Munck, Matt Shively and Fanboy and Chum Chum
Photos: Courtesy of Nickelodeon (5)