Celebrity Bikini Babes: Holly Madison and Kate Beckinsale

The stars were out celebrating the last days of summer over Labor Day weekend looking fabulously toned in their itty-bitty bikinis. Holly Madison donned her black and white bikini for the holiday at the Encore Beach Club in Las Vegas. Peep Show star Holly Madison enjoyed drinking champagne with her friends at the crowded pool party.

Kate Beckinsale relaxed with her husband, Len Wiseman, and her daughter, Lily, at a beach in Mexico.