Count me as another one that always wears a bra, forms, and nightgown to bed every night, along with hosiery (usually pantyhose, but sometimes garter belt and stockings). I've been doing this every night this year, but I don't think there's a pattern to it yet

Outside of that, I'm always wearing women's slip shorts as a means to contend with a rash I keep getting up high between my legs when it's humid and I walk. It can get quite painful. I looked for solutions for quite a while, but finally found (thanks to my lovely wife!) that slip shorts solved the problem. So, I now wear them full time. As for outerdress? Not so much. I have to work five days a week, and I still have two kids at home who don't know and whom I don't want to know (at least or now), so I dress fully when I get the chance.