Talk:Saratoga/Gallery/@comment-2604:2000:7112:8300:38DF:B658:A97A:5B07-20170912225827/@comment-26574811-20171116011832

Japanese breast sizes are metric (2 cm per cup), while American's are imperial (1 inch, i.e. 2.54 cm per cup). They started counting at different sizes as well.

I read about Japanese sizes, within the range of "usual" breast sizes, are about two sizes smaller than American somewhere. So Japanese F cup is approximately equal to American D cup, for instance.