The SAG Awards nominee and author celebrates her new dating book in New York City. Plus: Patrick Dempsey, Britney Spears, Sienna Miller and more

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LAUGH RIOT

Denise Richards comes down with a case of the giggles on the L.A. set of her upcoming comedy Blonde and Blonder on Thursday. The actress costars in the comedy with Pamela Anderson as two unsuspecting women who get mistaken as international killers.