Not that I needed much persuading or arm twisting to be fair. I love me some fancy dress and I've haven't been to a fancy dress or costume party in years.
I'm going as a wraith worshipper to their wraith so I have a medieval type dress coming (since it's too late to make one now) and I'll be making many accessories including a wraith branding tattoo. It won't be as impressive as theirs but I really only consider myself as an accessory to them so that's all good :)
Yes, I am in fact a small child who likes to play dress up :D