Like most of the replies on here I wear begger all, it all stems from my time in the service when you were told its either nothing or "pussers" (Marine term for quatermaster) PJ's
Never changed since
But I do like to wrap the duvet over with one leg on top
I sleep in the same attire I did when first entering this lovely world, my buffday suit n nothing more.....save for when the painters are in and then I have me period pants on
Boxer shorts for him, nightie for her. Simple and effective.