With her pooch in tow, the Gossip Girl star celebrates her 21st b-day on the New York City set of her show. Plus: Ashlee Simpson, Lindsay Lohan, Paris Hilton and more
Credit: Clark Samuels/Startraks
Published: Monday Aug 25, 2008 | 05:50 PM EDT
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In town for the U.S. Open, tennis star – and John Mayer childhood pal – James Blake teams up with Maria Sharapova for a glamorous moment Friday at Heineken's Official USTA Player's party at New York's Empire Hotel.
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