The 2006 film that follows Magdalena and Carlos as a Los Angeles family prepares for a quinceañera is Quinceañera.
Magdalena is a pregnant teenager whose planned celebration becomes entangled with family expectations and religious concerns. Carlos, her gay cousin, also faces rejection and displacement. Their parallel experiences form the emotional center of the film.
Richard Glatzer and Wash Westmoreland wrote and directed the feature. It premiered at the Sundance Film Festival, where it won both the Grand Jury Prize and the Audience Award. Those prizes helped bring the independent drama wider attention.
The title can be confused with other Latino-themed films, including Under the Same Moon and The Book of Life. Neither of those films centers on Magdalena and Carlos or uses the quinceañera as the organizing event. The answer is the exact title of the 2006 Sundance film.