"Tell me something good? @ChakaKhan will be on this season of #dwts!" Dancing with the Stars posted on its official Twitter account.
Khan, 62, also confirmed the news on her own Twitter account with a short eight-second video featuring her smiling self.
"Hi, this is Chaka Khan and I want you to look out for me this season on Dancing with the Stars," she said in the Thursday night video, which is captioned, "It's official, y'all!! Need you to root for me."
Khan has won 10 Grammys since the 1970s.
She will be joining previously-announced contestants Alexa PenaVega and Carlos PenaVega, Backstreet Boys member Nick Carter, the late Steve Irwin's daughter Bindi Irwin, jockey Victor Espinoza, and Internet sensation Hayes Grier.
The entire cast will be revealed September 2 on Good Morning America. Dancing with the Stars' new season is set to premiere September 14 at 8PM ET/PT on ABC.