The new mom celebrates her 39th birthday with a Broadway show. Plus: Nicole Richie, Carrie Underwood, Carmen Electra and more

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SHOW STOPPER

A casually chic Jennifer Lopez spends her 39th birthday on Broadway – well, in the audience. The singer and husband Marc Anthony (not pictured) took in the Tony-winning musical In the Heights Thursday, enjoying what Anthony dubbed a "nice quiet evening together."