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Forget parties and the Hollywood scene -- Paris Hilton knows that the best way to spend her down time is with her sister Nicky!

Paris and Nicky caught a screening of Megamind at the Grove in Los Angeles last night, and as always, both of the ladies were super sweet to photogs as they headed back to the parking garage. So what did Miss P think of the movie? She tweeted, "MEGAMIND was such a great movie! 3D is deinitely the future! Had an amazing cast, so funny! A movie for both kids and adults! :)"