From 2006 to 2012 she starred in the TBS sitcom Tyler Perry's House of Payne. Her other series regular roles include Tv One sitcom The Rickey Smiley Show, Bounce TV prime time soap opera Saints & Sinners and Syfy horror drama Superstition.
Her stage credits include playing Coretta Scott King in the Rhythm and Blues Opera I Dream (2010), and well as role of Deena Jones in Dreamgirls (2012). In 2017, McKinney played Whitney Houston in the TV One film Bobbi Kristina. She released her debut album Officially Yours in 2017. Plays Cedric's mother in the BET series The Quad.
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