Other forms: transvestites
A man who identifies himself as a transvestite likes to wear clothing that is typically thought of as feminine or womanly.
You can also use the word transvestite to talk about a woman who enjoys wearing men's clothes, although it more frequently describes a man. Before you call anyone a transvestite, however, make sure the person doesn't consider the word offensive — it's more common these days to use the term cross-dresser.