In the last decade, I have an increasing number of young women in the age range of 17-19 who are interested in a breast enlargement with implants. Your photo shows you have minimal breast development. Although, it is true that breasts may develop late, and certainly into the early 20's, my experience has been that women like you often continue with very small breasts, especially if you have a family history of a smaller size. Therefore, I do think it may be appropriate and certainly safe to have a breast augmentation at 17 or 19. You would need to be emotionally and physically mature, in good health, and also realize that having breast implants is not a one time thing, as you will certainly need future surgery years later to replace the implants as they age. Breast implants are not permanent, and even though the average lifespan may be around 20 years, you are young enough that you will need to have further surgery later in life. It would be best for you to have a thorough consultation with a board certified plastic surgeon, and make sure that you fully understand all the information being discussed about breast implants and enlargement.