Do breasts always shrink when you lose weight?

Yes: Since breast consist of fatty tissue and breast tissue, loosing weight will reduce the volume of fat throughout your body - including the fat in your breasts. Thus the breasts will get smaller with weight loss.

No: If they're mostly glandular may not.

Usually: Breasts are comprised of fat and glandular tissue. Some women have a large amount of glandular tissue with little fat and vice versa. Fat is lost with weight loss, which impacts the breast.

Usually: Usually they do, but in some women the volume can be retained.

Most likely: When you lose weight you do not have control over what parts of your body lose over others. A healthy and diet exercise program will cause weight loss throughout your body. If your breasts shrink too much, talk to a plastic surgeon about your options for breast enhancement.