What is the best costume you have ever worn?

i was dead muammar gaddafi a few years ago
best costume ever

Last Halloween, I was post-hit-and-run Myrtle Wilson from the Great Gatsby. the make-up took forever to apply, and I spent a month sewing the dress.

My Beetlejuice costume. Well, actually it's Betty Juice (Beetlejuice's gender bender in the BJ cartoon) if you know your Tim Burton. I had to make sure the make-up was accurate.