A new study says that American women have the largest breasts in the world, with a mean breast size of 1,668 ml (that's the scientific "mean," not the slang "mean"). The study, published in The Journal of Female Health Sciences, analyzed data from nearly 400,000 women in 108 countries. It excluded women that have breast implants or that were pregnant or breastfeeding, so it's truly a measurement of naturals from around the globe.
You might be asking yourself why this study was done in the first place. If you guessed very important scientific merit, you'd be wrong. The authors stated the purpose of their research:
Increasing knowledge of the breast size variation of women from different countries is needed as a guideline for example for the product development and targeting of marketing actions of clothing industry and cosmetic surgery providers.
Apparently this study is "needed" to help clothing manufacturers and plastic surgeons. It seems like clothing manufacturers already know how to produce different size shirts and that plastic surgeons know where rich insecure people live. But if someone thinks this research is helpful, go nuts.
In the meantime, citizens of the United States can enjoy their title of largest breasts just before the Fourth of July. 'Murcia.