Five Reasons Why "Card Issuing Underwear" Has Become a Global Trend - Ladies' Underwear Like No Other You've Ever Seen

Yesterday, while playing online games, I was surprised to see a striking image on a fashion website: "hairpin underwear", and it was claimed that it had already swept the world. I sighed: I would never have thought that fashion has advanced to such a realm these days. Upon careful consideration, there are at least five reasons for its popularity: