At What Age Do Your Breast Stop Developing?

Doctor Answers 108

Breast development

Growth is finished at an early age but changes continue throughout your life. Weight loss/gain, genetics, pregnancy, and age can all affect your breasts over a lifetime.

Breast Growth

In general, breast development/growth ceases between ages 17-21 years.  A woman's age and breast growth is taken into consideration by plastic surgeons when discussing certain breast procedures with patients, especially younger patients.  That being said, breast size and shape never stop evolving during a woman's life and are affected by such things as pregnancy, breast feeding, weight gain/loss, and menopause.  These things will also affect a woman's breasts after having surgery such as breast augmentation, reduction, or lift.

Breast development

Usually the female breasts complete their development 3 to 4 years after the first menstrual period; but structural changes will keep happening during the entire life (pregnancy, breastfeeding, menopause).


Kemil Issa, MD
Dominican Republic Plastic Surgeon
5.0 out of 5 stars 4 reviews

At what age do your breasts stop developing.

This is a great question and really has a few different answers. Most women start to notice an enlargement of their breast tissue around puberty. Puberty in women typically happens before most males and occurs anywhere from 9-16 years old. If a women has not noticed much change in her breasts after the age of 18, then they have likely finished "developing". Breasts can also change in size according to weight gain and loss. In addition, when a women becomes pregnant, the breast tissue is stimulated to "grow" in order to prepare for lactation.

Breasts Continue to Change Throughout a Woman's Life

This is a great question. Although the FDA issues standard guidelines for breast augmentation at age 18, actual breast development is very variable from woman to woman. I explain more in the video.

David B. Reath, MD
Knoxville Plastic Surgeon
5.0 out of 5 stars 99 reviews

At What Age Do Your Breast Stop Developing?

There is no answer that will cover an individual woman. Variances are common, but on average, breast growth is complete by late teens to early twenties. Breast changes do continue with pregnancy, and weight gain. 

Thank you for your question, best wishes. 

When do Breast Stop Developing

On average breast growth stops somewhere between your late teens to early 20's. Your breasts will continue to change throughout your lifetime. Pregnancy, weight gain, weight loss, and hormonal changes will have an effect on the size and shape of your breasts.

Generally a t 18

It may vary between women but generally you should not expect more growth after 18 years of age unless you are gaining weight or becoming pregnant

Extremely Variable!

Most breast growth occurs during puberty and is stable by age 16-20.  Then, pregnancies, weight gain, weight loss and hormone replacement (birth control pills, pellets, and post menopausal hormone replacement) can all influence breast growth.  
Some would say that the breast keeps changing throughout life. 

When do breasts stop developing

Breasts stop developing after puberty, between the ages of 13 to 15. There are other reasons why the size or shape of your breasts will change throughout your lifetime: weight gain, pregnancy, hormonal changes.

Karl Schwarz, MD
Montreal Plastic Surgeon
5.0 out of 5 stars 7 reviews

These answers are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.