Dear abc, There is no natural way to increase your breasts size other than gain weight which is not recommended. By age 22, you have most like, reached breasts maturity as far as growth. In order to increase your breasts by 2 sizes, your only option is breasts implants. Not all results are the same, due to different techniqes and surgeon's skills , so do your due diligence. Consult only with experienced board certified plastic surgeons who operate in accredited surgery center for your safety. Most importantly, check the before and after pictures in the photo gallery, to make sure that they are numerous, consistent and attractive. Pay special attention to the symmetry, clevage area and the natural look. Best of luck, Dr Widder