Almost every teenage woman I hear from is worried about some part of her body. Either their breasts are too big, or too small, or their stomach is too big. You get the picture. We're all so worried about our bodies because we see these images on television that are supposed to depict some "ideal" woman. Of course, there's no such thing.
Your breasts may or may not grow, depending on many factors, including your weight, your genetics, and so on.