Your concerns are understandable but assuming you demonstrate physical and emotional maturity, you are not necessarily too young to undergo breast augmentation surgery. In my practice, I individualize recommendations after in office evaluation of patients' history and physical, maturity levels, motivation, and evaluation of the young ladies' understanding of potential risks/complications associated with breast surgery. In other words, the decision whether or not to proceed with elective breast surgery will ultimately be a very personal decision that each unique patient should make after CAREFUL consideration of the "level of concern" with her breast appearance VERSUS the potential downsides associated with the breast surgery under consideration. Generally, best to achieve a level of physical, emotional, psychosocial, and financial “stable state” prior to considering any type of elective plastic surgery. When the time is right, careful selection of a well experienced Board-certified plastic surgeon and careful communication of your goals will be key.Best wishes.