Heidi Klum found herself going green, so to speak, as she took the mic on Saturday wearing Dolce & Gabbana (alongside Nick Cannon). And Jim Carrey, making a surprise appearance, reportedly almost slipped in green goo backstage before even more of it was dumped on his head onstage.

As always, the Nickelodean's Kids' Choice Awards, a live and very slimy 90-minute ceremony (hosted for the third time by Jack Black), was teeming with stars, including: Steven Tyler, Eddie Murphy, Jane Lynch, Snoop Dogg, Taylor Momsen, Star Jones, Sofia Vergara, Paris Hilton, Miranda Cosgrove, Randy Jackson, Jason Segel, Kim Kardashian, Rosario Dawson and more.

Outrageous 'Arthur' star Russell Brand was targeted by gobs of green slime from kids in the mosh pit, and threw a faux hissy fit (alongside co-presenter Rico Rodriguez of 'Modern Family'), shouting, "I'm never having children!"

Willow Smith was on hand to perform 'Whip My Hair,' while Fergie and the Black Eyed Peas (who were named Favorite Music Group) opened the show. After the jump, check out the highlights.