M 21 years old n my weight is 47kg but my breast is small to the compare of others so how can i do to make my breast big?

See a plastic surgeo: They specialize in this. People can have their breast augmented. This is a personal choice.

Augmentation: Breast augmenation is a good method to enlarge breast. Under 22 years of age, the fda recommends saline breast implants for breast augmentatio. If you have an asymmetry in size, different size and shaped implants can be used to correct major asymmetry.

Endocrin & Gyne Eval: You should first discuss with your gynecologist. If you are having a normal menstrual cycle and your growth is otherwise normal you may be a candidate for breast augmenting with a breast implant or fat grafting.Silicone implants are reserved for patients over the age of 22.