Gladys Knight will be played by Liv Symone

Liv Symone has been cast as the Empress of Soul, behind the Motown hits 'I Heard It Through the Grapevine' and 'Midnight Train to Georgia'.

Liv is a recording artist and actress best known for her performance on Starz' 'Power Book III: Raising Kanan' and Broadway's 'Aladdin'.