Most girls are at stage four when they have their first period. One breast may start developing before the other. One breast may develop faster or more than the other. This can usually be hidden with loose shirts or bra padding. A nodular or lumpy breast texture is normal in adolescents.
Breasts swell during pregnancy and breast-feeding.
Stretch marks may appear on developing breasts and during pregnancy. These marks usually fade but may not disappear. Some nipples are inverted or point in. Hair may grow around the areolae. Plucking or shaving these hairs can lead to infections so either leave the hairs alone or carefully trim them.