Selena Gomez

Victoria Justice

Jaden & Willow Smith

The star-studded event got off to an immediate sticky start with Halle Berry's surprise sliming in her audience seat. Looking good in green, Lautner received the ultimate gooey prize for accepting Smith's challenge to a push-up contest, while presenter Chris Colfer was doused in slime by an exploding blimp at the podium. In an epic battle that had the giants of wrestling literally swimming in the goo, The Big Show took down The Miz in the inaugural KCA Slime Wrestling World Championships. Hosted by Nick's Jeff Sutphen with WWE superstar Santino Marella serving as referee, the showdown was set in a special ring that slimed the audience each time one of them hit the ropes or the corner posts. Much to his disappointment, Cee Lo Green was not so green after being revealed as the Creepy Voice who tried to ruin the show. Instead, he got "ice cream sundae'd" by Smith who said being slimed was an honor and his behavior was unslimeable. Bieber, the mystery celebrity who won the live viewer vote during the show, received both a blimp and a slime bath as he and Smith closed the show in signature green style with slime cannons in the grand finale.