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13 biggest celebrity surprises of 2013

By Rebecca Silverstein Slide 1 of 13

Celeb news can be predictable, like when George Clooney ends up single again, but some stories are downright shocking. So which star happenings blindsided us this year? Check out the 13 biggest celeb surprises of the past 365 days. Zac's stint in rehabIf you had to predict which former Disney star would head to rehab this year, who would it be? For us, it would be anyone but Zac Efron. But during the spring, the former "High School Musical" star did indeed get professional help for a problem with cocaine. "He realized he needed outside help. He reached out for it and is doing great now," a pal told Us Weekly. "He's in a good place. He's clean and he's happy." And we're happy to hear it!RELATED:26 reasons we love Zac
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