Dawnn Lewis is the actress who plays Cyrus' mother Gail DeBarge  in Let It Shine.

She has appeared in numerous television shows and movies including Let It Shine as Gail DeBarge, A Different World as Jaleesa Vinson-Taylor, Secret Life of the American Teenager as Laurens mother , Hangin with Mr.Cooper as Robin Dumars, Days of Our Lives as Dr. Knapp and many more.                                
Dawnn lewis

Dawnn Lewis

She is also a singer who in 2006 had released her debut CD which was titled Worth Waiting for.