Gwen Stefani and Gavin Rossdale brought their sons, Zuma and Kingston, along yesterday to producer Joel Silver's Memorial Day bash on the beach in Malibu. It was a particularly star-studded weekend for the Stefani-Rossdale clan, after they played host to friends like Kate Beckinsale and Victoria Beckham on Sunday to celebrate Kingston's special fourth birthday. Even though their afternoons were full of bonding with pals and celebrating, the adorable foursome wrapped up the holiday with a dinner just for themselves. Gwen recently talked about her boys, saying that she's unsure if they'll be trying again for a girl, and perhaps all her amazing clothes will have to be handed down to one of Kingston's girlfriends.

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