One of my breasts is an A cup, the other is a AA cup. Should I choose different breast implant sizes for these slightly asymmetrical breasts?
Volume is only one factor to consider when trying to determine the optimal correction for breast asymmetry. The anatomy of your breasts, as well as implant dimensions, specifically height, width and projection also play a major role in bringing about symmetry.
For example, a low profile implant, for a given volume, may be more than 2 cm wider than the same volume in a high profile implant. To compensate for that, the high profile implant ends up proving more projection and more upper pole projection. Even though the volume may be the same, the breasts will look very, very different. Even for the same style of implant, in some cases, a small volume disparity looks better than a different sized implant, because of the disparity in implant dimensions. The amount of asymmetry will help you and your plastic surgeon make the best decision for you.