Breast asymmetry is fairly common, in fact, most breasts are asymmetrical. Unevenness between breasts can vary in severity, from one side being a bit larger or smaller than the other to a complete absence of a breast on one side.
If you are concerned with asymmetry, you should to bring this up during your breast consultation. Together we can determine a treatment plan that will help bring better balance to your breasts, whether it is a reduction, lift, or a combination of both, that is also the best course of action for your individual needs and body type.