Check out these fotos of Rachel Bilson as she partied at Crown Bar nightclub in West Hollywood, California last night. Our photographer Picasso took these chic fotos of Rachel, who wore a white camisole under a black jacket paired with a pretty blue print skirt and a black derby hat as she was accompanied by some female friends. Here’s a challenge to our readers out there; Can you guess who Rachel Bilson’s buddies are? Who is that beautiful smiling friend of hers?