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Puberty starts when the brain triggers the production of sex hormones, initially leading to budding breasts. For girls, it starts at about age 11.
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After breasts start growing, body hair will start to grow and become thicker. New hair will start growing in armpits and public area, and arm and leg hair gets thicker.
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Mild acne begins due to high hormone levels.
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Girls will get taller during this stage.
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Gilrs will start to get taller with wider hips and fuller breasts.
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Puberty's final stages in a girl is menarche, and she is now considered an adult and able to get pregnant.
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Her body changes to where she reaches her adult height, where her hips and breasts become full.
