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The DWTS pros celebrate their spread in S.I.'s Swimsuit issue in Sin City. Plus: Zac Efron, Kim Kardashian, Gerard Butler and more
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DANCING DUO
DWTS pros Chelsie Hightower and Cheryl Burke hit the S.I. Swimsuit party at Vanity Nightclub inside the Hard Rock Hotel & Casino in Las Vegas on Thursday. The sexy stars traded their ballroom gowns for itty-bitty bikinis for the issue, which Burke's dad found too hot to handle.
