I find myself not wanting to wear modern women's clothing, as it doesn't do anything for me.
But that's not the case with historical gowns such as from the Victorian era, with corsets, hoop skirts, satin gloves and the like. The idea of wearing _that_ sort of clothing just gets me incredibly aroused.
But it seems that even then most crossdressers are more of a 'passing' type?
Mind you, part of that probably is that I'm really overweight anyways (and my wife doesn't know about my fetish) and it's more of a fantasy as opposed to actually being able to do it.