for the shirt thing; something soft? cotton, maybe?
and the button i'd use clay or something, just make sure it's durable because it looks like it's prone to be snagged/bumped into(specially if you're clumsy like me)
Akatsuki cloak, random lolita, maybe aria, maybe soul eater
prolly Otakon 2011, maybe NYAF.
You are a neglected Cosplayer when you look for photos of yourself forever after a con and you cannot find more than three. If you are, join the club, and begin your post with something related to neglected cosplayers!