This article examines the history of Japanese clothing sizes, how they differ from American sizes, and whether or not they are really smaller. It explains that Japanese clothing sizes are based on body measurements rather than garment measurements like American sizes are, and that they tend to run smaller due to differences in fabric and manufacturing processes. Additionally, it provides tips for shopping for clothes in Japan such as knowing your exact body measurements, being aware of how different brands fit differently, and checking return policies before making a purchase.