Barbara Walters Exclusive: 'Journey of a Pregnant Man'

Last spring, the stunning announcement that Thomas Beatie, a transgender man, was pregnant sparked controversy and questions about traditional notions of what is a man and what is a woman.

Barbara Walters with Thomas Beatie and his baby daughter. Watch the interview Friday on "20/20" at 10 p.m. ET.

(Steve Fenn/ ABC )

In their first interview since the birth of their daughter, Susan, this past summer, Beatie and his wife, Nancy, speak candidly to Barbara Walters. Find out about the childbirth experience, how they're raising their daughter, and what the future holds for them on "What Is a Man, What Is a Woman? Journey of a Pregnant Man" Friday on "20/20" at 10 p.m. ET.

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The report features exclusive footage from inside the hospital during Susan's birth and of the Beatie family at home.

The hour also explores how gender boundaries are dissolving, and how transgender couples create families amid the social and legal complexities of this brave new world.