Hope your parties went well. I'm replying for anyone else that might be interested in the answer. There is really no way to be too dressed up for these types of things as far as party attire. I've never been to the Villains one and I know you can't wear costumes. When I went to Party of the Senses some of the men were in really nice suits and the women in cocktail dresses. I wore a tailored button down shirt, dress pants, and heeled boots.