ABC has finally officially named the professional dancers who would be contending for the coveted Mirror Ball trophy on the Season 21 of the reality dancing show 'Dancing with the Stars.' According to the network, the hugely popular dance competition will see the return of some old favorites and series regulars in the 2015 edition of the show.

Quoting Access Hollywood, IB Times reports that the 'Dancing with the Stars' pro cast was revealed on 'Good Morning America.' The list of professional dances includes Derek Hough, who has been on the show since 2007. He will return for a final attempt at winning the series prior to hanging up his dancing shoes. ABC also announced that Val Chmerkovskiy, Peta Murgatroyd, Mark Ballas, Witney Carson, Artem Chigvintsev, Sharna Burgess and Allison Holker will be joining Hough to win the Mirror Ball trophy for the 'Dancing with the Stars' Season 21.

While the complete list of participants was only announced on yesterday, on Tuesday, Karina Smirnoff has already shared with 'Dancing with the Stars' fans that she would be returning to the ballroom. In addition to making the announcement via Instagram, Smirnoff shared a short video on a page dedicated to the show. Thirty-seven-year-old Smirnoff sat out Season 20. Access Hollywood reported that ahead of the season she shared on a Facebook post she wanted to take the time off to add "some other exciting endeavors."

Although most of the fan favorite 'Dancing with the Stars' cast has decided to return to the dance competition, there is one series veteran who has thrown in the towel. According to executive producer Rob Wade, long-time judge Len Goodman will not participate on 'Dancing with the Stars' Season 21. Wade, however, assured fans that the decision of 71-year-old Goodman to leave the show was just because of scheduling conflicts and that he may still appear on the show intermittently in some capacity.

'Dancing with the Stars' Season 21 returns to ABC on Monday, Sept. 14.