The story is a dramatization of the rise of Motown-style girl groups like The Supremes , focusing on the exploitation of Black artists and the sacrifice of artistic soul for mainstream "crossover" success.
It serves as a critique of the rigid gender roles in 1990s Japan, showing how the stage provides a temporary "dream" world where traditional boundaries can be blurred. The Musical: Dreamgirls (2006)
If you are referring to the Oscar-winning film starring Beyoncé and Jennifer Hudson, lesbian themes are not a primary focus of the plot.
In a broader queer-media context, the term "Dream Girl" is sometimes linked to the trope. Queer theorists have occasionally interpreted this trope as a "veiled homosexual narrative," where an "out-and-proud" character teaches a more repressed character how to embrace life—a pattern often mirrored in lesbian cinema. Dream Girls - Docuseek