Second round of fat transfer to breasts..how much of a size increase?

Fat grafting has the advantage of using your own body's material to increase breast size, but only small augmentation is possible and it is just gaining popularity and long term results are not yet available. There is always uncertainty about how much fat will "take", increasing the possibility of asymmetry and need for revision. Many plastic surgeons are still concerned about how the fat that did not take looks on mammograms, and if it will increase long term false positive results. You may want to consider implants, as results are more reliable. Be sure to consult with a board certified plastic surgeon to help you navigate this decision. Good Luck!

Great question, and it deals with the reasons why the results around the country and the world differ so much. The Key Points are:It is
important to understand the principles behind fat graft survival. The best analogy is the person that is driving a Ferrari on a congested highway.  The fat graft is the Ferrari, and your breast is the congested highway.  Does not matter how great your car is, if it will be sitting still in the highway.  

The highway needs to be bigger.  Your breasts need to be prepared to best accept the amount of fat graft
required for the size you would like to achieve.

External Tissue Expansion devices like BRAVA stretches your breast tissues (even after fat grafting) and increases its vascularity to generate a favorable recipient
bed for the fat grafts.  This key step is critical for women like you that would like to be much larger, and will certainly help you increase even two cup sizes with one session of fat grafting.

The required amount of sessions depends upon the relative amount of tissue deficiency or excess, and the patient’s
compliance with external expansion prior to grafting.There are other techniques that can help enlarge your breasts such as a reverse abdominoplasty (done at the same time as fat grafting, without incisions), which brings tissue from the upper parts of your abdomen into your lower breasts.  This technique can bring by it self about 200 cc of tissue, and will also help sculpt your abdomen and waist.Fat transfer breast augmentation represents a phenomenal incisionless technique, which is safe, and minimally invasive. Hope this helps!