Should I get 2 different sized silicone implants or the same size?

Nobody has perfectly symmetric breasts, before or after surgery. For patients whose breasts are nearly equal in size I generally put in the same size implants. For patients who have a bit more of a discrepancy I will use different size or style implants to get the best match. One thing to consider is to try to find a plastic surgeon who has a Vectra 3-D breast imaging system. This high tech camera takes a 3D photo of you and lets you see what you will look like with every implant on the market. You can try a 300cc on one side and a 350 on the other. Keep trying different combos until you figure out what looks best on you. Only a small percentage of us have this technology so you may need to call around until you find someone who has it. Good luck. 

Using Different Size Breast Implants For AugmentationIf there are small differences in size, I may choose to use the same implant. As the volume approaches 1/2 to one full cup size, two different implants should probably be used.

Breasts
frequently are different sizes, shapes and position. Unfortunately, you have not provided any
photographs but there may be other asymmetries.
If your breasts are asymmetrical I recommend a new technique called
Breast Augmentation with Mini Ultimate Breast LiftTM. Using a circumareola incision it is possible
to reshape your breast tissue creating upper pole fullness, elevate them higher
on the chest wall and more medial to increase your cleavage. Through the same incision, implants can be
placed. Aligning the areola, breast
tissue and implant over the bony prominence of the chest wall maximizes
anterior projection with a minimal size implant. Small round textured silicone gel implants
placed retro-pectoral look and feel more natural, are more stable, less likely
to ripple or have complications needing revision. Implant profile is irrelevant in the
retro-pectoral position since the muscle compresses it. This technique can correct asymmetrical size,
shape and position. Best Wishes,Gary Horndeski, M.D.