Reporter: Liz Hayes
Producer: Stephen Rice
This is a story that at first glance seems quite unbelievable. It's about a little girl called Jazz. She's only eight years old and she was born a boy.
She is probably the youngest transgender child in the world. For years, Jazz felt something was wrong, that somehow she was trapped in the wrong body. So she decided to dress and live as a girl.
And even more controversially, her parents accepted it.
Your natural reaction is how could they? How could someone so young possibly make such a complex decision?
That's certainly what Liz Hayes thought, but why don't you meet this unusual family, then see what you think.
For more information, please visit the TransKids Purple Rainbow Foundation, set up by Jazz's parents to support research and education about transgender issues.