Leonardo DiCaprio celebrates birthday with Brad Pitt, Robert De Niro, others

Leonardo DiCaprio celebrated his 50th birthday with a star-studded party on Saturday night. The intimate dinner, catered by Nobu, saw the likes of longtime collaborators Steven Spielberg, Robert De Niro, and Brad Pitt in attendance. Other notable guests included Paris Hilton, Katy Perry, Orlando Bloom, and Edward Norton, among many others.