One of the greatest minds in plastic surgery who modernized the process behind breast implant surgery was the late John Tebbits. After tens of scientific articles written and published in our scientific journal, PRS, he published a textbook on breast augmentation. It was revealing to me how he managed informed consent for breast augmentation, something I learned a lot about. I am certain you never signed a consent like his when you had your surgery. His consents were taylor made to a variety of circumstances, including one for larger implants. The bottom line: it can be entirely unpredictable how the body will respond to the mass and volume of an implant, with greater risk of unwanted outcomes with ever larger implants. Tissue dynamics and the formation of scar capsule around the implant will affect where the implant sits, and how thick the breast tissue remains after expanding ('drop and fluff'). Data supports the fact that larger or higher profile implants lead to higher rates of revision. Having said that, your breasts are symmetrical and have a pleasing shape, and I do not recommend revision surgery with a larger implant. However, a surgery that tightens the scar capsule and reinforces it with resorbable mesh is a possible option ('internal bra"). Please keep in mind that even with a revision surgery expert, you may experience a complication leading to an outcome that negatively affects the appearance of your breasts compared to now. If on examination, your tissues appeared very attenuated or if you were experiencing continued expansion and increasing glandular ptosis or drop out, then that operation would have a better risk/benefit profile.