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And we have our first official ballroom competitor.

Property Brothers star Drew Scott was revealed as one of Dancing With the Stars' celebrity contestants for the upcoming 25th season on Good Morning America on Wednesday. 

The TV star surprised the live studio audience to officially announce he is joining the ABC reality hit's line-up, and will be paired with last season's winning pro, Emma Slater.

"I want to make it my duty to get her a second Mirror Ball," he said during the live broadcast. While he is used to working with a partner, Scott joked he is moving up. "I definitely upgraded my partner—at least in the looks department." 

The duo have already gotten busy rehearsing and Slater noted one particular challenge: his height. Not to fret—he's learning from a ballroom champion. 

Drew Scott, Dancing With the Stars

ABC/Good Morning America

The full cast will be announced live on Good Morning America on Sept. 6, but sources tell E! News that married couple Nick and Vanessa Lachey will be competing against each other this season, along with E! reality star and WWE personality Nikki Bella. ABC does not comment or confirm casting rumors. 

While we have to wait for the full celebrity line-up to be revealed, the roster of pro dancers was already announced on GMA

Maksim Chmerkovskiy, Peta Murgatroyd, Val Chmerkovskiy, Emma Slater, Lindsay Arnold, Witney Carson, Artem Chigvintsev, Keo Motsepe, Gleb Savchenko, Sharna Burgess, Alan Bersten and Mark Ballas, returning after a three-season break, are set to duke it out for the mirrorball trophy this season. 

Dancing With the Stars premieres Monday, Sept. 18 on ABC.