Support WBURWhy Indie Brands Are At War With Shein And Other Fast-Fashion CompaniesSharon Pruitt-YoungJuly 20, 2021 ShareA Shein app, here in a photo illustration, in the IOS App Store in Bargteheide, Germany. Shein has become the most-installed shopping app in America. (Katja Knupper/Die Fotowerft/DeFodi Images via Getty Images)