Though the size of breast depends on various factors like genetics , body mass and proportion, fat contents and physical activity etc. and hence It Is multifactorial . Similarly treatment or brest enhancement also depends on the various factor. Some of Hormonal therapy may be advantageous . Brest enhancement massage oil and oral medications have also shown positive report in various  patiens. Consult me  here on practo.

Not possible.

Not possible

Though it is difficult but still there are some possible methods with satisfactory results. Certain options are available. You can contact me online for better understanding.