Hollywood isn't just rocking out to Britney Spears. Many celebs have packed up and headed two hours east of LA for the Coachella music festival, the annual alt-rock and hip hop weekend in Indio, CA.

Stars like Anne Hathaway, pictured hugging it out with actor boyfriend Adam Shulman, hit the three-day outdoor event to catch acts like new mom M.I.A., Joss Stone, The Chemical Brothers, Paolo Nutini and The Killers.

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• Agyness Dean
• Anne Hathaway
• Coachella
• James Rousseau
• Kate Bosworth