You know you’ve made it big in Hollywood when you’ve been slimed at the Nickelodeon’s Kids’ Choice Awards.

This year’s recipient was Katy Perry who was almost knocked over as she was hit by a box full of green gunge at the ceremony in Los Angeles last night, March 27, 2010.

Justin Bieber’s live performance of “Baby” left teen girls throughout the auditorium screaming.   Rihanna performed a medley of tunes while being pushed on a tiny pink tank.    First lady Michelle Obama received a Big Help award for her “Let’s Move” initiative, which aims to help curb childhood obesity.

The following celebrities received an orange blimp in honor of Nickelodeon’s 2010 Kids Choice Awards:

Favorite Movie Actor – Taylor Lautner
Favorite Movie Actress – Miley Cyrus
Favorite Movie – Alvin and the Chipmunks: The Squeakquel
Favorite Voice from an Animated Movie – Jim Carrey for his vocals as Scrooge and the ghosts of Christmas Past, Present and Future in A Christmas Carol.
Favorite TV Show  (20++ Photos after the jump!!) -iCarly
Favorite Reality Show – American Idol
Favorite Cartoon – SpongeBob SquarePants
Favorite Television Actor – Dylan Sprouse
Favorite Television Actress – Selena Gomez.
Favorite Female Singer – Taylor Swift
Favorite Song – Taylor Swift for “You Belong With Me,”
Favorite Male Singer – Jay-Z
Favorite Music Group – Black Eyed Peas
Favorite Male Athlete – Ryan Sheckler
Favorite Female Athlete – Misty May Treanor
Favorite Book – The Diary of a Wimpy Kid series
Favorite Video Game – Mario Kart
Cutest Couple – Jacob & Bella (Taylor Lautner & Kristen Stewart) from The Twilight Saga: New Moon

In a new special category this year, the Ultimate Dance Smackdown was awarded to Nickelodeon stars Noah Munck and Matt Shively as voted by viewers during the live telecast.

What did you think of this year’s Kids Choice Awards??