Why do different sizes of implants look incredibly different on different women?

The same implant in a different patient may look different as their breasts are different in size and shape before the procedure. If you look at the pre op photographs you will notice that the patients will have breast that look different and have varying dimensions and volume. Great  question! 

Yes, you hit the nail on the head. Implants often do look different on different peopel that is why it is difficult to tell people in these forums what the best implant for  them is.

The differences that you are referring to can be due to a variety of reasons.  The easiest reason to look at is the projection (profile) of the implant.  For any given diameter, there are a variety of different implant projections.  For instance, if a 12.5cm diameter implant is needed, available silicone implants range from 275cc to 590cc (ranging in difference of projection).  Conversely, if approx 4cm of projection from a silicone implant is needed, the available implants range from 135cc to 750cc (ranging in deference of diameter).  Therefore, a given implant volume may differ in projection or diameter, depending on the implant characteristics. As always, it is important to consult with a board-certified Plastic Surgeon.

Thank you for the question. Basically what you are saying is why no two patients will ever look the same. So I would first recommend you see a board certified plastic surgeon. He/she will be able to discuss the sizes, shapes and types of implants, based on your frame, your breast size and the size you want to achieve. Good Luck.

Thank you for your question.  You are absolutely correct that many factors go into how a particular sized breast implant looks on a person.  The chest diameter, shoulder size, and most importantly breast width and base width all determine how a particular sized breast implant will look.That is why it is so important to have a formal consultation with a board certified plastic surgeon who will do measurements of your base breast with, and other breast measurements to determine the best size breast implant for your unique body shape.  There are many methods that are available to estimate the proper breast implant cc size to obtain a particular cup size following breast augmentation.  For more details on how to choose breast implant size please read the following link:

It depends on the women‘s frame, her weight and her actual
breast size. For example, a 300 cc
implant placed in someone who is 100 pounds and an A cup will look like a very
big change in size compared to placing a 300 cc implant in a woman who may be
150 pounds and a C cup. The 100 pound
women will effectively become a full C cup, whereas the 150 pound women would
barely move up to a D size perceptibly.  It is a good idea to go to a plastic surgeon who has a 3D imager to help with accurate visualization for selection of breast sizing. We know this is a very personal and important choice for our patients.  

The first assumption you are making is that the listed sizes are the actual sizes,this is not always the case.The second issue is that certainly different body types produce different results with the same implant.A patient who is 5'2" 100 lbs. will get a different result than a patient who is 5'11" 165 lbs.