The story of Jazz, an 11-year-old transgender girl, is the subject of the documentary I Am Jazz: A Family in Transition, which premieres Sunday on Oprah Winfrey's OWN network.

OWN will broadcast the film immediately following the premiere of Being Chaz, which follows author-activist Chaz Bono and his girlfriend Jennifer Elia as they share their lives post Chaz's gender reassignment. The film also looks at the controversy that surrounded his decision to compete on ABC's Dancing with the Stars.

(Related: Chaz Bono proposes marriage to girlfriend Jennifer Elia in Being Chaz.)

In an interview with gay glossy The Advocate, Jazz said she has always identified as a girl.

“Ever since I was able to express myself, I always referred to myself as a girl,” Jazz said. “I went for the Barbies and the dresses and would avoid the boy toys. When I was 2, my mom would say, 'Good boy' and I would say, 'No, mommy. Good girl.'”

Jazz added that she fears puberty: “Ever since I was younger I had nightmares about growing facial hair and having hair all over my body. Now that the time has come where this situation might occur, I'm getting nervous and desperate to take hormones to prevent puberty from happening.”