Cosplay fetish isnt limited to just the Japanese (although honestly I think that a majority of people that do have them ARE Japanese. LOL) its more of an personal preference/taste in the matter.
...now as for the types of costumes, thats a whole another story right there. I for one think that a maid outfit is F'ing sweet. (.>//w//<)
..."ripping stockings"!? Hmmm...your BF has an interesting take on the matter. (.^//^);