Big mistake.
"Cosplay" apparently refers to dressing-up like a video game character, fairy (the mythical kind), or anime character. What they do once in costume is beyond me. They probably claim it's for some gaming fantasy but I suspect it's actually to screw. Any time adults put on a costume it's for some sexual reason.
I only perused one page of Google results but it seems that the Final Fantasy series is well represented. The costumes themselves range from almost-hot:
To highly-disturbing:
I could have happily lived the rest of my life not knowing people did this.
I guess this shouldn't surprise me. Adults dress-up for things like Star Wars premiers and renaissance fairs. I even went through a phase where I liked to dress like Superman and Batman, of course I was 5 at the time. I think an active imagination is a very healthy thing but a loose grip on reality is not. The people into these dress-up games are leaning towards the latter (at least the ones going out in public dressed like Squall Lionheart and/or posting online photos of themselves doing so). If you're doing this kind of thing in the privacy of your home for some kinky reason that's cool and all, other people really don't want to see it though.
If you really must get into "cosplay" then maybe you should consider a costume that can be worn in public without drawing attention. This way you can enjoy the fantasy and not worry about being chased and beaten by a group of jocks. Here are some suggestions:
