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NEW YORK, NY - NOVEMBER 05: (EXCLUSIVE COVERAGE) (L-R) 'Dancing with the Stars' Mark Ballas and Derek Hough pose backstage at the hit musical 'Chicago' on Broadway at The Ambassador Theater on November 5, 2015 in New York City. (Photo by Bruce Glikas/FilmMagic)

NEW YORK, NY - NOVEMBER 05:  (EXCLUSIVE COVERAGE) (L-R) 'Dancing with the Stars' Mark Ballas and Derek Hough pose backstage at the hit musical 'Chicago' on Broadway at The Ambassador Theater on November 5, 2015 in New York City.  (Photo by Bruce Glikas/FilmMagic)