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Rosie, Kristen, Emma and more get in touch with their inner hippies at the annual music festival
Credit: VLNY/Zodiac/Splash News Online
Updated: Monday Apr 23, 2012 | 01:00 PM EDT
By: Alex Apatoff & Kate Hogan
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Joining the pants party with her high-waist floral pair, the actress makes a surprise visit and fits right in with her layered necklaces and oversize sunnies.
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