Last weekend I went to my local ren faire. What a fantastic time. If you havent been to one before, definitely go. At mine, I'd say 70% of people are in a costume of some kind. 95% of the costumes were period correct or related.
I went in star trek blue. My favourite response a lady tells me that I'm violating the temporal prime directive for being in uniform. That was hilarious!
Note, I was literally the only person dressed in star trek lol.