I don't think it's an actual character at all. Sometimes they just like to put on the uniform and be done with it. It's just a unifom fetish, that's all.
I understand that photoshop is quite necessary in proffessional looking cosplay, it's just that that C.C.'s was done quite badly. Too obvious. Now 车车's cosplay is very well shooped.
and why does hALOTOO insist on saying Code Ge-ass?
And I say, I do see a partial nip-slip here. Still not a very good Sheryl though, boobs too small.
hALOTOO said:

Subarashii Sekai Superbly Seductive
The Wolf-Boy & The Girl in The Red Hood Sweetly Feral
Rory Mercury Cosplay Godly & Gothic
One Piece: Burning Blood Trailers Fiery Hot
Ero-Manga Sensei Anime Announced