Bradley Cooper & Zoe Saldana Party in L.A. – with His Mom!
02/28/2012 AT 05:55 AM EST
Cooper had his arm around his mother (who's already met Zoe), and led the way through the Weinstein Company bash as Zoe, Casey Affleck and a pal followed them through the crowd. Meanwhile, Scarlett Johansson and new beau Nate Naylor walked hand-in-hand through the party together. The pair stopped to chat with Russell Simmons before heading out. – Julie Jordan