Miley Cyrus, Selena Gomez, Taylor Swift, Jay-Z and the Black Eyed Peas were all winners at Saturday’s Nickelodeon Kids’ Choice Awards (check out the full list of winners)—a shindig that also boasted live performances by Rihanna, Justin Bieber and iCarly star Miranda Cosgrove. Oh, come on—you know you’re just dying to see the Bieb belt out “Baby” for the 400th time. Plus, Katy Perry got slimed! Head below for all the gooey green action.

Miranda Cosgrove performing new single “Kissin’ U.”

Justin Bieber – “Baby”

Rihanna – “Hard/Rude Boy/Don’t Stop The Music medley” (Note that Ri Ri does a kid-friendly version of “Rude Boy” here, swapping out the “can you get it up” line in the chorus for “is my love enough.”)

Katy Perry getting slimed. “I can’t see anything,” she complained to actor Jonah Hill. “Why does it taste like boogers?”