Barron Hilton holds his daughter at the Malibu Chili Cook-Off with wife Tessa Gräfin von Walderdorff

Mel Gibson snaps photos of his son Lars, four, during family day at Malibu Chili Cook-Off

Lady Victoria Hervey wears a skimpy bikini as she enjoys a beach day in Malibu

Alessandra Ambrosio looks ethereal as she arrives to Labor Day party in Malibu