Do women wear underwear underneath their swimsuit in Japan ?

NO you are such a persistent PERVERT. you should see a psychiatrist, really.

Check past Q&A of this category. You must know the answer what you are asking. It is interesting to see so many people ask same question here again and again such like whaling bashing or how to take thrifty travel in Japan.

really? Well i guess to them we seam wierd for not wearing underwear under our swimsuits

yes, it's called fundoshi.

Why wear an underwear, special or not, beneath a swim suit otherwise known as swimming costume? Most swim suits come with protective layers acting as under wear protection covers. If you want to look good in a swim suit, it is advisable not to wear an underwear. I'm sure many Japanese ladies know about this and want to look pretty. At the same time, there are a few wearing under wears. It's only applicable to old mature ladies.

Oh course they do. You know how men are judged by having the bigger stick? Women are judged by having the bigger basketballs. Japanese women wear underwear underneath their swimsuit to bulk out their things. Chinese woman already have that bigger beauty and can just were the swimsuit without the underwear. But because Chinese women are hotter, I think they should just not wear an upper piece of any kind.

No, they swim naked!