Pubic hair begins to take a triangular shape and underarm hair appears. The first menstrual flow or period occurs. As internal organs continue to develop, the ovaries may begin to produce mature eggs that are capable of being fertilized. Growth in height occurs more slowly. Sometime between ages 12 and 19.
Breasts approach adult size and shape and pubic hair spreads to the top of the thighs.
The voice may deepen slightly and menstrual cycles gradually become more regular. It's normal for females to experience increased sexual desires, dreams, fantasies and arousal during puberty. As a female becomes sexually excited, her vagina becomes wet. When she becomes very excited, she has an orgasm. Orgasm occurs when sexual tension reaches its peak and is suddenly discharged.