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Healthy Children Ages & Stages Gradeschool Puberty Girls' Secondary Sex Characteristics
Healthy Children Ages & Stages Gradeschool Puberty Girls' Secondary Sex CharacteristicsGirls' Secondary Sex Characteristics
| Girls' Secondary Sex Characteristics | Usual Age Range |
| The breasts begin to develop | 7 to 13 |
| Pubic hair begins to grow | 8 to 14 |
| The vagina grows longer, and its outer lips (labia) become more pronounced | 8 to 15 |
| The body grows taller and heavier | 9 to 14 |
| Menstruation begins | 9 to 16 |
| Hair begins to grow under the arms | 11 to 16 |
| Glands in the skin and scalp begin to produce more oil, which can cause skin blemishes | 11 to 16 |
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