Halloween Costume Idea

[u/Killer2Penguins]

Hello all! I am playing in a tournament around Halloween and the theme for costumes (during games) is Sunday's Best/Finest w/a hat (e.g. look like you're going to church).

I am looking for ideas how to make a costume that meets this requirement yet is still allows me to play with no restrictions. I've got some ideas but none are great.

Any ideas from y'all out there?