I have a sinking feeling I should know this character.
I recall seeing a game cover with a girl portrait on it, looking eerily similar to this cosplayer. However, I'm also pretty sure that game's model had more eye make-up on her.
Does anyone know which one I'm talking about? It's a fairly recent game I believe.
Anyway, if anyone knows who this cosplayer is, drop me a note? As well as any other unknown cosplay I might still have in this category. Thanks! I appreciate it very much!
EDIT: Thanks to anon who commented saying this is from the manga series, Zone-00!