From Vanessa Hudgens and Hilary Duff to "Robsten" and Joshua & Diane, celebs show off peace, love and good vibrations at the California music festival
Updated: Monday Apr 15, 2013 | 12:00 PM EDT
By: Kiran Hefa & Alison Schwartz
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Demi Moore's daughter has plenty of reasons to smile Friday – just check out her happy feet.
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