Unfortunately, we shut down the cosplay board due to increasingly creepy behavior on the part of our users, including a report of cyber-stalking. It could be brought back if there is enough interest from cosplayers, but I'm not sure how to gauge that. We'd be resetting the board with new rules and harsher moderation, as well as some warnings about how to prevent people from tracing your photos back to your irl info.
Discussion thread here
https://uboachan.net/sugg/res/3425.html