That's another good reason to wash and shampoo more often, and keep our hair off our faces. Hormones make our bodies grow up. Our bodies make chemicals called hormones that guide the changes in our bodies. Often we grow and change so fast that we feel clumsy. Also, we may have uncomfortable growing pains, usually in our arms and legs.
Girls can see lots of the changes that estrogen causes.
Their breasts begin to get fuller. Often one breast grows faster than the other. Their hips get rounder. Their waists get narrower. Their vulvas and clitorises grow slightly, too.