1 Doctor agrees with this answer
What is your breast size.. it is normal to have bigger size.. it is usually genetic.. if you feel that it is out of proportion as compared to your normal body..you can consult a gynecologist and/or cosmetic surgeon and opt for liposuction to reduce the size.
The only real way to lose breast size without surgery is to lose weight, and then it will only go down in proportion with the rest of you. If you have a small body and naturally large breasts than you should go for a consultation for surgery.