Daytime in Drab: Usually full cut briefs cos they give the necessary support.
Nightime and in winter, (with tights on to keep my arthritic knees warm) any of my collection that lacks support as above, but the tights “complete the task”.
Summer time at night and when out in public, (with garter/supsender belt to support my stockings), lacy silk, french knickers, (with the gaater tabs peeking out from below the lacy fringe of the knickers.)
Disclaimer. None of the above in the middle of a searing hot Australian summer.