STOCKHOLM (Reuters) - Europe's biggest fashion retailer, Sweden's H&M, has launched wear-once paper panties for the summer. "They are on sale now. They are good to have in your handbag if something unexpected happens, if you lose your luggage, or you exercise and forget to take a change of underwear with you," H&M's spokeswoman Anna Carin Bjorne said. The panties are designed as one-size-fits-all "G-strings" and sold in small packs of three in red, green and black. There are no paper underpants for men, but designer Camilla Thulin was quoted by tabloid Aftonbladet as saying the idea could appeal to...