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 some patiens. At your age of 22 years , scope of improvement is present.  Consult me here on practo ,or instant consult .

Endocrinologist