Lohan and Ronson share a laugh during a break from filming Labor Pains in North Hollywood. Plus: DeAnna Pappas, Brody Jenner, Paris Hilton and more  

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CROSSING GUARD

She may not be on the set of Gossip Girl – but Leighton Meester, who plays Upper East Side princess Blair Waldorf, still gets her way as she stops traffic (literally!) while out with costar Nicole Fiscella (not pictured) Thursday in New York.

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