When to get menstruation after breast development, according to the body to make a judgment, there are the following situations: 1, when the girl body development, about two to two and a half years or so will appear the symptoms of menstruation, this is the universal law, but each woman’s body condition is different, at the latest before 18 years old will appear menstruation, some girls in about 10-12 years old, will appear menstruation symptoms, is This is a normal physiological characteristic. 2. Some women’s breasts will enter the development period due to age, many women’s breasts start to develop when they are about 8-12 years old and will not stop developing until they are adults. 4-5 years after the development of breasts, the first menstruation will occur, some people develop early and some people develop late, so it is not possible to make a specific judgment, as long as the menstruation is normal, you can not worry.