Cardi B has apologised to the daughter of Martin Luther King Jr for portraying the civil rights leader's wife, Coretta Scott King, in a comedy skit.

News outlets reported that the Bronx rapper was featured in The Real Housewives Of Civil Rights, a two-minute parody that surfaced on TMZ.

Tuesday was the 55th anniversary of the March on Washington and Dr King's "I Have a Dream" speech.

The sketch from comedian Rip Michaels' new series Off The Rip portrays pettiness between  and Malcolm X's wife, Betty Shabazz - and ends with a joke about Dr King sleeping with "The Iggy Azalea of the Civil Rights Movement".

But Bernice King later thanked Cardi B on Twitter for reaching out and apologising, and said she looked forward to talking with her.