ET's sources can confirm that '80s sitcom star Kim Fields will be competing for the coveted mirror ball trophy when Dancing With the Stars returns for season 22.

The 46-year-old actress is best known for her role as Tootie Ramsey on The Facts of Life, and joined The Real Housewives of Atlanta cast this past year.

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News of Fields' joining DWTS comes just a few weeks after ABC announced that Julianne Hough will not be returning as a judge. "I will miss being on the panel for Season 22, but have a lot of exciting stuff coming that I look forward to sharing," Hough told ET in a statement. "The pro dancers, producers and crew at DWTS will always be my family."

The Grease: Live star's brother, Derek Hough, is expected to return next season as a pro dancer, and tells ET that it was time for his younger sister to leave the judges' table. "I think she did three great seasons, and it's time for her to go," he said. "She's got great things on the horizon, and she's doing great things. Len [Goodman]'s coming back, and so, you know, I think four judges feels a little redundant anyways, so I think it's the right thing to do."

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 ABC told ET that they do not comment on casting rumors.

The full cast will be revealed during a live announcement on Good Morning America on March 8.

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