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CBS NewsJulianne Hough joins "Dancing with the Stars"CBS NewsJulianne Hough joins "Dancing with the Stars". Julianne Hough arrives at the premiere of Twentieth Century Fox's "Let's Be Cops" at the Cinerama Dome on Aug. 7, 2014, in Los Angeles. Kevin Winter/Getty Images. Shares. Tweets; Stumble. Email; More +.