Jessica Alba and Nicole Richie had a bikini beach hangout in St. Barts yesterday. The two stars are spending time in the Caribbean with a group of friends to celebrate pals Kelly Sawyer and movie producer Jamie Patricof's wedding anniversary. The group flew down on Wednesday and have been grabbing all the beach time they can get. Over the weekend, Jessica wore a bikini as she snuggled with husband Cash Warren and did cannonballs off of a barge. Meanwhile, Nicole showed off her bikini body on Saturday when she slipped into a black string two-piece to chat with her girlfriends. Nicole's husband, Joel Madden, didn't make it down to St. Barts for the celebrations, but he did pop up at the Logie Awards in Melbourne on Sunday.