Meet Ben who used to be Rebecca
Page last updated at 08:32 GMT, Monday, 2 August 2010 09:32 UK
By Brandice Alexander
http://www.bbc.co.uk/newsbeat/10820395This is Ben, who was born a girl. Ben wants to be referred to as 'he' now.
But he used to be called Rebecca, have long blond curly hair and wear dresses.
This wasn't a decision Ben, 17, took lightly.
He is now being treated by specialist doctors at a top London clinic dealing with Gender Identity Disorder which means 'someone who is trapped in the wrong body'.