Last Night's Parties: Justin Bieber, Halle Berry Get Slimed By Nickelodeon, Edward Norton Supports The 99% & More!

by Dena Silver · April 2, 2012

Katy Perry, Emma Stone, Heidi Klum, Adam Sandler and more hit the Orange Carpet for the green slime-filled Nickelodeon Kids' Choice Awards; Anna Paquin, Sandra Oh, and Cat Deely hand out the awards for the nation's most talented student film makers in Hollywood; Elijah Wood, Jaime King and Edward Norton prove step out in support of the great majority at the All In For The 99% Event on Saturday night—from awards ceremonies and "Mad Men"-inspired soirees, we have the scoop on who partied where this weekend in L.A. in this Monday edition of Last Night's Parties!

Clockwise: Andrew Garfield, Emma Stone [via], Jaden Smith, Jada Pinkett Smith, Willow Smith [via], Shepard Fairey, Ted Soqui [via]