Am I a tomboy, a crossdresser, or a lesbian if I'm more comfortable wearing guys' wardrobe?

Why Crossdress?
Even psychiatrists have a difficult time with this one. They thinkthat it starts around early teens, but, some male children .....
Although the term dressing in womens clothing was a modern invention, it has exactly the same two Latin beginnings as the word travesty, which dates from the 17th century.
In the 1960s Harry Benjamin and others started working with people showing cross-dresser behaviour again. Hirschfeld also noticed that sexual arousal was often, but not always, associated with cross-dresser behaviour; he also clearly distinguished between crossdressing as an expression of a person's "contra-sexual" (transgender) feelings and fetishistic behaviour, even if the latter involved wearing clothes of the other sex. Hirschfeld himself was not particularly happy with the term: he understood that lingerie was only an outward symbol chosen on the basis of various internal psychological situations.
Today dressing in womens clothing is still applied mostly to male-bodied persons.