The singer and husband Kevin Federline tote their new puppy in Malibu. Plus: Lindsay Lohan, Jennifer Lopez, Leonardo DiCaprio and more


Spears and Federline celebrate her 23rd birthday in the wee hours of the morning Dec. 2 at Hollywood's Concorde nightclub. Also on hand to help the pop star have fun: Nicky Hilton, Mandy Moore, Danny Masterson and Josh Duhamel, with girlfriend Fergie of the Black-Eyed Peas.

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