Cosplayer... does not mean posting herself on the internet. I literally just did cosplay like a month ago at a convention, Cosplaying is a hobby, not a pornography category, even if some do it, it's just you being a weirdo.
People gotta realize wanting a cosplayer gf is the nerd equivalent of wanting to marry a striper. Please think for one second the kind of girl that posts herself on the interent for free.