You can safely undergo rhinoplasty once your facial bones and cartilage have stopped growing. This milestone usually occurs at about age 15 for females and 16 for males but can vary by individual. A good guideline is your rate of growth as measured by your height and your shoe size. If your height and shoe size are increasing every six months, that’s a sign your skeletal structure is still growing. If your growth has slowed and you are within an inch or two of your projected adult height, your nose has probably matured enough to have rhinoplasty.