46 year old mom & 23 year old daughter stand side by side wearing identical thongs. They are both topless and nearly nude in public. In Europe this is totally normal.
Someone asked my wife if casual nudity is common at a swingers party. Definitely yes, swingers parties are casual nudity and clothing optional. Everyone is usually naked by midnight but there is never any pressure.
Two wives wear extreme bikinis. Bikini tops are considered too modest. Bikini tops are being replaced by pasties or Pastease. Sometimes a bit of pink electrical tape will do to cover the nipples & areolas. Women want their breasts as bare as legally possible.