Efron cozies up to a pet pooch in Aspen, Colo. Plus: Britney Spears, Mariah Carey, Heidi Klum and more
Published: Monday Dec 21, 2009 | 05:00 PM EST
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Reese Witherspoon hits the ground running Friday, working up a sweat with a girlfriend during her morning jog in Santa Monica, Calif.
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