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Both are ubiquitous on the social scene, both have hot husbands, and, as of today, both are 365 days away from turning 40. Author/socialite Plum Sykes and her twin, designer/socialite Lucy Sykes, turn 39 today. Jay-Z is also celebrating his 39th birthday. Ms. Tyra Banks is turning 35. Marisa Tomei is celebrating her 44th. Saturday Night Live's Fred Armisen is 42. And actor Jeff Bridges is 59.