The Hollywood Reporter also says that "Lady Gaga, Olympia Dukakis, and Danny Glover will also appear in the film, to be called Dionne. Glover will play Warwick's father, while Lady Gaga will portray Cilla Black, the singer's 'musical nemesis'. Olympia Dukakis will play Marlene Dietrich, who was Warwick's mentor."

AMBI Pictures are producing Dionne, with Randall Jahnson writing the screenplay. This film will focus on Warwick's earlier career in the '60s, and is based on the her autobiography My Life As I See It.