Ashlee Simpson-Wentz
National Photo Group
• It was a boys' night out under the stars at the Los Angeles Zoo and Botanical Gardens while Gavin Rossdale and son Kingston, 4, dropped by a bash celebrating the new Elephants of Asia habitat together. After watching Billy the elephant saunter by the new elephant barn, the father-son duo ate food served in Chinese takeout boxes, snapped a souvenir photo together in the party's photo booth and visited a kid-friendly glitter-tattoo table. Guitarist Slash also hit the opening-night party with his boys, Cash and London.
• A demure Leonardo DiCaprio, enjoying a pre-theater dinner at Delphine at the W Hollywood with friends. Wearing his trademark baseball cap, Leo had dinner and drinks before heading over to check out West Side Story across the street at the Pantages Theatre.
• Katy Perry, standing on top of a booth and dancing to her own hits "Firework" and "Peacock" while partying at Las Palmas in Hollywood.
• By JENNIFER GARCIA, CARLOS GREER and MARISA LAUDADIO
