Transvestism

[Oralee]

Transvestism is the act of cross- [dressing], or dressing in clothes typically [worn] by the opposite [gender].

[Justin Bieber]

The action or practice of dressing in clothes primarily associated with the opposite sex.

[Tanya Shivari]

The practice of wearing clothes usually associated with the opposite sex, as a form of self-expression, usually by a heterosexual (= not gay) man who sometimes wears womens clothes, make-up, jewellery, etc.: