The average volume of a natural female breast is roughly 327 millilitres, which is equivalent to the size of a European B cup. Finnish, Swedish, Norwegian and Russian women have far and away the largest breasts in the world, with a 2016 Target Map reporting an average size of a D cup and bigger across these regions.
Storm in an N cup: larger breast sizes create retail growth
New map compares breast sizes around the world - NZ Herald
Average Breast Size: Statistics on Breast and Cup Sizes by Country, Age, and BMI (Height and Weight)
5 Different Types of Manicures - The Nail Pro
Average Breast Size & Bra Size in the USA & World
38D Bras: Understanding the Cup Sizes, Boobs & Equivalent Bra Size - HauteFlair
bra size of an average lady - OFF-61% >Free Delivery
All about breasts & bra sizes
Bra Fit Guide - How to measure your Bra size
Breast Augmentation B To C Cup - Dr Mark Duncan-Smith