The upcoming season’s roster of pro dancers was revealed Wednesday on “Good Morning America.”
Smirnoff had been absent from the prior season’s show, which was won by Val Chmerkovskiy and celebrity partner Rumer Willis.
The new season premieres at 8 ET on Monday, Sept. 14, on ABC.
In addition to Hough, Ballas and Smirnoff, other pros who will appear on “Dancing”’s season 21 are Chmerkovskiy – the defending champion, Artem Chigvintsev, Allison Holker, Sharna Burgess, Peta Murgatroyd and Witney Carson.
The new season’s celebrity cast will be announced on Wednesday, Sept. 2, on "GMA."