The first visible evidence of puberty in girls is a nickel-sized lump under one or both nipples. Breast development happens in distinct stages, first before birth, and again at puberty and during the childbearing years. Changes also happen to the breasts .

Puberty is inevitable, but every girl has a unique experience and handles it in her. Breast development is not finished until around age or for most girls. Growing breasts is just a normal part of being a girl, but for something so normal, breast development can.

During puberty, you will do some pretty fast growing.

Understanding how your breasts will change during puberty. You may be wondering if yours will ever grow, or wish that they would stop growing! Find out when and how your breasts start to develop during puberty. Breast development is often the first sign that puberty has begun.

They will start as breast “buds,” small mounds . As a person grows, her breast starts to develop mainly on two important periods in life: puberty and pregnancy. The start of breast development usually is one of . Breast development, also known as mammogenesis, is a complex biological process in primates that takes place throughout a female’s life. It occurs across several phases, including prenatal development, puberty, .