It's not just about clothes though is it - it is what they represent. A CDer wears them and tries to emulate a woman.
I hear so many times that if women can wear "mens" clothes - why do we have a problem with men wearing "womens" clothes. The difference is - when I stick a pair of trousers on - I dont look in the mirror and admire what I look like as a man - I dont try to emulate a man - neither do i want to grow a beard so I can look like one.
It's a bit tough sometimes - to see the guy you married and didnt know was a CDer - suddenly shave his chest, legs and whatever else he wants to do and try to be a woman.