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EXCLUSIVE: A Shirtless Zac Efron showed off his six pack abs while trying sneak in an early morning swim with his brother Dylan. The teen heartthrob is in Maui, Hawaii to receive the Maui Film Festival's Shining Star Award in an opening-night tribute at the Celestial Cinema...Pictured: Zac Efron..Ref: SPL182867 130610 EXCLUSIVE.Picture by: Dave / Splash News..Splash News and Pictures.Los Angeles:310-821-2666.New York:212-619-2666.London:870-934-2666.photodesk@splashnews.com.

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