It is normal for girls and teenagers to have lots of questions about their breasts as they start to develop. Seeing the body change can be daunting, and it is perfectly normal to worry about what to expect. Here are some common questions and answers about breast development to help guide teenagers through the process. Breasts develop as the hormones estrogen and progesterone are released at puberty. These hormones make the breast tissue grow.
Normal Breast Development and Changes | Johns Hopkins Medicine
Breast development happens in certain stages during a woman's life: first before birth, again at puberty, and later during the childbearing years. This starts with a thickening in the chest area called the mammary ridge or milk line. By the time a baby girl is born, nipples and the beginnings of the milk-duct system have formed. The first thing to develop are lobes, or small subdivisions of breast tissue.
Why wear a bra? No-one needs to wear a bra, but bras protect and support breasts, they help to make you feel comfortable when you are dashing around doing sport, they can help a girl feel good by giving a shape that she likes to her body and they can make a girl feel less self conscious when wearing tee shirts around those 'immature' boys in her class or friendship group. Boys can be such a pain sometimes, twanging bra straps and making silly comments - can't they?