I only dress up occasionally just for fun, and I'd never dare go out in public, not even for a drive at night.. but then I had an idea.
I am planning for a warm-but-showery day during the Summer so I can wear one of these. A poncho style rain cape:
I can go out in nothing but a sissy frilly-covered diaper and a pair of shoes! I'm not sure I'd dare to wear a dress but perhaps I would if I was wearing a long length cape. Either way, riding in a soaking wet diaper I'd be reeking of pee, sweat, baby-talc and perfume.