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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STOP & SNACK

After reportedly spending a day working in a dance studio, Britney Spears stops in to a convenience store in Studio City, Calif., Thursday for an energy boost. Recently, the singer has been more play than business: She's been hitting the club scene with new guy Isaac Cohen, for whom she recently bought some sexy lingerie.