>>12134583>>determined by genetics
Isn't that exactly what I said in my post? Fuck off and reevaluate your reading comprehension skills, or lack thereof.
Do you want proof of the fat index ratio increase that is affecting Japan because of a direct correlation with western fast food? Review the statistics of average bra cup size increase versus time span and proliferation of fast food. The measurement of an A cup has been updated several times over the last several years in Japan.