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You can vote to decide the 13th member of the Dancing with the Stars cast. For the first time in "Dancing" history, the 13th contestant will be voted on by fans online. Fashion commentator Carson Kressley (Season 13), singer Sabrina Bryan (Season 5), Disney Channel star Kyle Massey (Season 11) are vying for votes to score the coveted 13th spot in the competition. The winner won't be announced until Aug. 27. Watch "Good Morning America" Monday to see these stars live!