VIDEO: 20/20 Special Edition: My Secret Self Pt. 2 of 5

From the moment we’re born, our gender identity is no secret. You’re either a boy or a girl, gender organizes our world into pink or blue. As we grow up, most of us naturally fit into our gender roles. Girls wear dresses and play with dolls, for boys, it’s pants and trucks.

But for some children, what’s between their legs doesn’t match what’s between their ears.