What should i do to help my breast development?

It will without help: Breast size is likely to ^ w puberty, pregnancy & possibly prior to your period. You can build up chest muscles w exercise & weight lifting but it will not ^ the amt. Of fatty tissue. There are no pills, herbs or machines that will ^ breast size. Breast augmentation is surgical enlargement. A padded bra will ^ appearance of volume. A supportive, well fitting bra can also enhance appearance.