<P> Deena and Effie reconcile, with Effie revealing to Deena that Curtis is Magic's father, while Curtis agrees to give Effie's record national distribution in order to avoid being reported to the FBI . Having been inspired by Effie's victory and realizing Curtis' true character, Deena leaves him to make it on her own . </P> <P> By 1975, The Dreams give a final farewell performance at the Detroit Theater and invite Effie onstage for the final song . As the concert ends, Curtis notices Magic in the front row and realizes she is his daughter . </P> <Ul> <Li> Jamie Foxx as Curtis Taylor, Jr; based upon Motown founder Berry Gordy, Jr., Curtis is a slick Cadillac dealer - turned - record executive who founds the Rainbow Records label and shows ruthless ambition in his quest to make his black artists household names with white audiences . At first romantically involved with Effie, Curtis takes a professional and personal interest in Deena after appointing her lead singer of the Dreams in Effie's place . </Li> <Li> Beyoncé as Deena Jones; based upon Motown star Diana Ross Deena is a very shy young woman who becomes a star after Curtis makes her lead singer of the Dreams . This, as well as her romantic involvement and later marriage to Curtis, draw Effie's ire, though Deena realizes over time she is a puppet for her controlling husband . Knowles was nominated for a Golden Globe Award for her performance . </Li> <Li> Jennifer Hudson as Effie White; inspired by Supremes member Florence Ballard, the plus - sized Effie is a talented yet temperamental singer who suffers when Curtis, the man she loves, replaces her as lead singer of the Dreams and his love interest, and later drops her altogether . With the help of Jimmy's old manager Marty, Effie begins to resurrect her career a decade later, while raising her daughter Magic, the offspring of her union with Curtis . Hudson won the Golden Globe Award and the Academy Award for Best Supporting Actress, among other honors, for her portrayal of Effie . Hudson also became the first American Idol contestant to win both major awards . </Li> <Li> Danny Glover as Marty Madison, Jimmy's original manager before Curtis steps into the picture, Marty serves as both counsel and confidant to Jimmy, and later to Effie as well . </Li> <Li> Anika Noni Rose as Lorrell Robinson; inspired by Supremes member Mary Wilson, is a good - natured background singer with the Dreams who falls deeply in love with the married Jimmy Early and becomes his mistress . </Li> <Li> Keith Robinson as C.C. White; inspired by Motown vice president, artist, and songwriter Smokey Robinson, Effie's soft - spoken younger brother C.C. (Clarence Conrad) serves as the main songwriter for first the Dreams and later the entire Rainbow roster . </Li> <Li> Eddie Murphy as James "Thunder" Early (Jimmy); inspired by R&B / soul singers such as James Brown, Jackie Wilson, and Marvin Gaye, is a raucous performer on the Rainbow label engaged in an adulterous affair with Dreams member Lorrell . Curtis attempts to repackage Early as a pop - friendly balladeer . Jimmy's stardom fades as the Dreams' stardom rises, and as a result - he falls into depression (which he copes with through drug abuse). Murphy won a Golden Globe and was nominated for an Academy Award for his role in the film . </Li> <Li> Sharon Leal as Michelle Morris; based upon Supremes member Cindy Birdsong, Curtis' secretary who replaces Effie in the Dreams and begins dating C.C. </Li> <Li> Hinton Battle as Wayne, a salesman at Curtis' Cadillac dealership who becomes Rainbow's first record producer and Curtis' henchman . </Li> <Li> Loretta Devine as Jazz Singer </Li> <Li> Dawnn Lewis as Melba Early, James' wife </Li> <Li> John Lithgow as Jerry Harris, a film producer looking to cast Deena </Li> <Li> John Krasinski as Sam Walsh, Jerry Harris' screenwriter / film director </Li> <Li> Jaleel White as Talent Booker at the Detroit Theatre talent show </Li> <Li> Yvette Nicole Brown as Curtis' Secretary </Li> <Li> Mariah I. Wilson as Magic, Effie's daughter </Li> </Ul> <Li> Jamie Foxx as Curtis Taylor, Jr; based upon Motown founder Berry Gordy, Jr., Curtis is a slick Cadillac dealer - turned - record executive who founds the Rainbow Records label and shows ruthless ambition in his quest to make his black artists household names with white audiences . At first romantically involved with Effie, Curtis takes a professional and personal interest in Deena after appointing her lead singer of the Dreams in Effie's place . </Li>

Who is jennifer hudson's character in dreamgirls based on