Gynecomastia (for Teens) - KidsHealth - puberty breast bud

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Breast Development puberty breast bud


Girls usually begin puberty between the ages of 8 and 13 years old. The earliest sign of puberty in most girls is the development of breast "buds.

Find out when and how your breasts start to develop during puberty. When breasts start to develop, a small bump called a breast bud grows under the nipple​.

Breast development, or the growth of a girl's breasts, is often the first sign of Breast development is caused by hormones released by the ovaries at puberty. is slight swelling under the nipple, a stage of development called breast buds.