Not as wrong as you thought - there was actually a lot of confusion about the name. The anime is connected to a game called Crisis Core, but since Last Order came out well before the game did, for a while people weren't sure which was supposed to be which.

Cosplay is turning out to be one dangerously addictive hobby. There are probably some photos around if you're interested though. Er... somewhere, anyway ^^;; *usually far too shy/lazy to post many pics up in her journal*