"I really want to do the show," the Fuller House star told PEOPLE in 2010. "I just want to dance, but the fact that it would be on camera, and I'd get to have my hair and makeup done and wear those costumes? Awesome!"
It won't be the first time she's danced on television. Sweetin began taking tap and ballet classes as a 3-year-old girl, and when she starred on Full House, the writers would incorporate dancing into her role.
"Stephanie was always dancing," she recalled. "A week or two before a dancing episode, the writers would say, 'Okay, you and your teacher choreograph a routine.' "
Sweetin, now 34, even had an ideal partner and a favorite dance picked out.
"I really like Derek Hough," she said. "Maks is good too – my mom loves him. But I like Derek's style and his technique. And I really enjoy Latin ballroom. I've always wanted to learn the Argentine tango."
Sadly, last year's champ Hough, 30, is sitting out season 22 – but Sweetin is now thrilled to be competing with Keo Motsepe.
And she's ready to rumba.
"If I did do the show, I would ask, 'How many hours did the winners rehearse?'" Sweetin said in 2010. "Then I'd want to do that, plus an hour. I would be that determined."