Loincloths are making a comeback -- I guess -- in Japan. As a substitute for whatever women's underwear they've been used to. That, according to a video I saw, has wires and is uncomfortable.
In the video they showed you bring it up through your legs and push it under a belt thing.
I'll see if I can find the link. At the video they say they've sold over 5,000 of them since December. Which doesn't sound like many for an entire country.