"Being a cross-dresser doesn't mean you have to be bumping and grinding.

Medical Questions Crossdressing
transvestism and trans-gender
Even behavioral analysts have a difficult time with this one. They think that it starts around .....
Although the term dressing in womens clothing was a modern invention, it has exactly the same two Latin roots as the word travesty, which dates from the 17th century.
I haven't bumped and grinded, and I could become a cross-dresser if I wanted. The homosexual and lesbian rights movement after the Stonewall riots weakened tranvestism's combination with homosexuality, since more lesbians and gays became visible and most of them did not show crossdresser behaviour. Hirschfeld himself was not particularly happy with the term: he understood that dresses was nothing but an outward symbol chosen on the basis of various internal psychological situations.
That left crossdressing as transvestic fetishism, in which transvestic behavior is coupled with, and often necessary for, sexual arousal.