How do girls change as they grow up?

In girls, puberty occurs earlier than in boys. The initial signs in girls are observed from 8-9 years old. At the age of 10-12, most of the girls notice significant changes that occur in the body. Breast growth begins, body hair appears and menstruation begins, and the hips become slightly wider. By the age of 15-16, the girl acquires more feminine features and figure, her voice becomes high, her height increases.