I think 8 and 10 are the sizes that have been most grossly distorted. I'm 40, medium height and build, wore 8 in mainstream American brands such as Gap for years, and now wear 6s or even 4s in the same brands. I didn't change. The clothes changed. If this woman has a small frame and wears an 8, she may well be visibly pudgy - and apparently the Peruvians have no patience for pudge. God bless them.