Your problem is relatively uncommon, but fortunately not for an experienced plastic surgeon. Breast asymmetry in mild forms is extremely common, but obviously yours is more significant, but this is correctible, and you should be able to end up with a very pretty outcome. There are many ways to find an experienced plastic surgeon but it does require a bit of research. Making sure your plastic surgeon is either board eligible or board certified is critical. Both the American Society of Plastic Surgeons and the American Society for Aesthetic Plastic Surgery are a good place to start. Google is good as well, but listings on Google are often "paid advertising". Most important are the credentials and training of your plastic surgeon, but also his or her sense of aesthetics needs to align with your own. Be open to the idea of more than one consultation or opinion before singing up for surgery. As far as a specific surgical treatment plan, based on your photos alone, you will need at the very least a breast lift and/or reduction of your right breast to make it resemble your left breast if you do not want your left breast augmented. If you do want your left breast augmented, you may or may not need to have the right breast augmented as well, depending on the final breast size you hope to be. Since you are only 5 feet tall, you do not want your breasts to be disproportionately large for your frame. Use photographs of your concept of "ideal" to communicate with your plastic surgeon as to the final outcome you are hoping for. Best of luck to you.