Tell your mother that some people in our class say that girls must wear small vests. Why?

If you are a careful mother, you will always pay attention to your physical development, remind you of some precautions in the early stage of development, tell you some safety knowledge and self-protection awareness in advance, and buy a comfortable and suitable vest.

However, if your mother is not careful, you can ask her to rub your back in the shower, which seems to inadvertently let her find that you have begun to develop, so you should prepare a small vest.