According to Diana Ross, Richard Pryor instructed her on how to behave during the scenes of drug use.
Dorothy Dandridge was to star in the role of Billie Holiday in an earlier proposed film version of the singer's autobiography but died before the film was made.
First African-American biopic to be nominated for the Academy Awards, earning five nominations, including Best Actress.
The soundtrack album was a huge hit for Diana Ross and held the #1 position on the Billboard album chart for two weeks in April 1973.
Diana Ross was pregnant with daughter Rhonda Ross Kendrick while preparing for her role in this movie.