It's kind of surprising that Nancy McKeon hasn't already competed on "Dancing With the Stars."

The "Facts of Life" star has the nostalgia legacy on lock. Two previous "Facts of Life" stars have already competed (Cloris Leachman in Season 7, and Kim Fields in Season 22). Plus there's a reboot of the show in the works. Because of course there is.

So welcome to DWTS Season 27, Jo Polniaczek!

The Fall 2018 season starts Monday, September 24 on ABC. "Good Morning America" gets all of these DWTS exclusives for ABC, and they revealed Nancy McKeon, 52, as the first celeb cast member. She will be paired with two-time pro champ Val Chmerkovskiy.

GMA has already revealed 13 pro dancers for this season, including one new competitor, and now we just have to hear about the remaining celebs.

The full "Dancing With the Stars" Season 27 cast reveal happens Wednesday, September 12 on GMA.

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