the prop yes, as far as the dress goes, then that is fine too. Japanese are kind of embarassed and not too open with cosplay here as it is in the states..... Your practice is really up to you, sometimes i go to an event and my cosplay is in a really big bag, and sometimes its in a suitcase, it's just really up to you.
It's okay I do bite, but if I like you I'll eat you......
Hyakkiyakou wo buttagiru!! Slash the crime wave!" Hitotsu! Hidou na Akuji o Nikumi! One! Hating the Inhuman Evil! Seigi wa Katsu! Justice Will Win! Hyakkiyakou wa Buttagiru! Jigoku no Banken! Deka Masutā! Cutting down hundreds of evil doers! Hell's Guard Dog! Deka Master!"