Forever 21, which came to epitomise the fast fashion movement by selling trendy, of-the-moment clothing to teens at bottom-barrel prices, is relaunching in Japan by quietly overhauling itself as an upmarket clothier.
About 80 percent of Forever 21′s new collection, which will launch in the fashion-crazy country Tuesday via online sales and a pop-up store in central Tokyo, will be developed by local partner Adastria Co., Japan’s…