The development of curves in girls is a natural part of puberty, which typically starts between ages 8 and 13 and can continue until around 18.
During puberty, girls experience hormonal changes that lead to the growth of breasts, hips, and other body parts. The timing of these changes can vary widely among individuals.
It's important to remember that everyone develops at their own pace. Some girls may notice changes earlier than others, while others may develop later. There is no "normal" age for girls to get curves, and it's essential to avoid comparisons.
If you have concerns about your child's development, it's always best to talk to a doctor. They can provide personalized guidance and address any specific questions you may have.