International apparel sizing systems and standardization of apparel sizes

With the increasing globalization of trade, the importance of size designation of clothing has increased. Consumers' body build and sizes are different according to gender, age, and body type. In this study standard garment sizing systems published in the USA, the EU, Germany, China, Japan and Korea were compared and the ways of defining body types, the key dimensions and the range were analyzed.The body measurement range covered by systems differs by country and key dimensions control the variability of body size and provide the framework for size categories. The key dimensions differ by garment type but those used most often are chest girth for men's garments and bust girth for women's garments. Height measurements are used as the secondary key dimension for adults' garments, but as the first key dimension for infants' or children's garments. Changing consumer demands are guiding new approaches to sizing. Apparel companies need to define their target customers and to integrate consumers' needs into their product development processes. The sizing standard will play a significant role in the ready-to-wear garment business and will provide guidelines for manufacturers and consumers.