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Julianne Hough won back-to-back titles on 'Dancing With The Stars' seasons 4 and 5.
Hough's season 4 partner was speed-skater Apolo Anton Ohno. She and Brazilian auto racing driver Helio Castroneves paired up for season 5. She and her partners received a perfect score at some point in the competition.
(Pictured: Julianne Hough appears in a photo from 'Dancing With The Stars' in 2008.)
( Photo / ABC)