A crossdresser and a drag queen are two seperate things, like a VW Bug and a Greyhound bus.
A drag queen is more of a mimic by exaggerating everything a woman does, from using way too much eyebrow pencil and lipstick, to wearing outfits that hurt the eyes. A drag queen has no hope, nor desire, to "pass".
A crossdresser, on the other hand, desires to "pass".
Maybe that's not the best definition, but I think it'll work.
