At puberty, a woman's body will undergo several changes. One of them is enlarged breasts. But each woman's breast size is not the same, there are also those who have small or large breasts. When women experience puberty, usually at the age of 8-13 years, the body will begin to produce and release the hormone estrogen. As a result, fat in the connective tissue in the breast also joins and enlarges. It is this extra fat that causes a woman's breasts to begin to grow larger. During this period, women will also start menstruating for the first time. Women's breasts can continue to grow during adolescence and even into their early 20s. Enlarged breast size will be different for every woman. Some have large breasts, small breasts, and even asymmetrical breasts, where the right and left breasts differ in size. Causes of Small Breasts Small breasts can be caused by several factors below, including: Heredity If your mother's breast size is large, chances are you ...