ABC's "Dancing With the Stars" - Season 21 - Week One [Getty Images]

DANCING WITH THE STARS - "Episode 2101" -- "Dancing with the Stars" is back with an all-new celebrity cast ready to hit the ballroom floor. The competition begins with the two-hour season premiere, LIVE, MONDAY, SEPTEMBER 14 (8:00-10:01 p.m., ET) on the Walt Disney Television via Getty Images Television Network. (Photo by Adam Taylor/Walt Disney Television via Getty Images)

Walt Disney Television Adam Taylor