During puberty, girls or those with vulva and ovaries develop breasts first, followed by pubic hair development and hair growth in the armpit. Simultaneously, young girls may find their hips getting fuller and waists thinner with larger and tender breasts.
Furthermore, vaginal discharge is a common occurrence during puberty. Initially, it means that the body is preparing for its first menstrual occurrence, which is the final stage of puberty and which means that the female body is capable of reproduction.
Parents need to know that the onset of menstruation in girls may differ from person to person. While the average age is 12, one can get their first period at the age of 8. However, talking to your gynecologist may give you a better understanding of the same.