No, typically girls do not have "hairy" genitals at the age of 4. Pubic hair usually begins to grow during puberty, which occurs between the ages of 8 and 13 for most girls. Every person's body develops at a different pace, so it is possible for a 4 year old girl to have minimal amounts of pubic hair, but it is not common or expected. If a 4 year old girl does have noticeable hair in her genital area, it could be a sign of a hormonal imbalance