ET has the latest...

ET breaks news that THOMAS BEATIE, aka the pregnant man, is writing a book that tells the story of his transformation from Girl Scout and beauty queen to a fully legal and recognized man with a wife and baby on the way.

Beatie, who first told his story on "The OPRAH WINFREY Show" earlier this spring, underwent gender reassignment surgery but kept his female reproductive organs and is now pregnant with his and his wife NANCY's daughter.

The book is titled LOVE MAKES A FAMILY: A Memoir of Hardship, Healing and an Extraordinary Pregnancy and is set to hit stores on September 30.