(For those of you that don't know, I compete in competitive speech and debate in the National Christian Forensics and Communicator's Association, the NCFCA. Every year we have a two-week conference, and during that conference we have two banquets. The first is a formal, for which I have something picked out. But I'm having trouble with the Decades Banquet - basically it's a costume ball in which you come wearing something from the 20th century. Now, I would absolutely love to get away with cosplaying, but I'm not entirely sure who, since most anime that I watch takes place in the late 19th or early 21st century. I think it's expected to come in a 20th century American costume, but I'm not against breaking the trend (though my mom may be. >_>).)
(Just keep in mind that this is a very, ah, conservative league, so costumes must be conservative as well.)
(Thanks!)