Why is my breast not fully grown at the age of 14?

At the age of 14 you still have time for your breasts to continue maturing. Your breasts will continue to grow and change into your late teens and possible 20's. Give it time. All the Best.

Dear princess,    At the young age of 14 , the body growth is definitely not complete. The same way  that you become taller, have bigger muscles etc, your breasts can keep growing till age 22 - 24. The breasts size is genetically determined, so some females get bigger breasts after age 14 and some do not. A good clue for you might be the females in your family that look like you . Observe how did their breasts developed with time. If after age 18 your breasts did not change much or changed insufficiently, you can always consult with board certified plastic surgeons for the option for breast implants.                 All the best,                              Dr Widder

Unfortunately you are fourteen and want breast right away. The good news is that you are fourteen and have a lot of potential time for development. Breast development in young women often occurs in spurts. Most growth is probably over by close to 18, but it is not unusual to develop after that. Be patient time will tellEric Weiss MD

Breast growth continues in almost all women until at least age 16, often continuing for several years beyond. The growth pattern varies, and is not always linear--it can happen in spurts. The growth pattern in female relatives may be predictive. Good reassurance can better come from your pediatrician/ family practictioner.  All the best. 

You normally will see breasts develop at the time of puberty, but it goes on through the teenage years until the early 20's. Some develop early, some develop late. There is no way to predict things. I would not recommend considering surgery for underdeveloped breasts till 18 years old. 

Most girls reach breast growth between 15 and 16, but breast may continue to grow up to age 21. You might ask the women in your family, mother, aunts, grandmother, when they were fully grown. Remember, some do not grow large breasts.

Thank you for your question.  As others have stated breast growth can continue at least into your 18 and in some people into the early 20s.  My guess is that you will have further breast growth over the next 4-5 years.I will check with your pediatrician or family doctor to make certain that there are no other signs of the arrested  development.  I would not consider breast augmentation for enlargement until at least 18 years of age.