I appreciate your question and thank you for sharing your photos. The best candidates for a breast augmentation with implants are women who want a significant increase in volume, usually a cup size or greater, so it sounds like you are on the right track. Unfortunately without an in-person exam, I wouldn't be able to give you an accurate assessment of how large your breast augmentation would be with 450cc implants. But here is an idea of how I achieve accurate sizing for my patients. In my practice, I have a system for taking exact measurements of my patient's chest wall during the initial consultation. Proper sizing for your implants is important to creating the most realistic looking breasts possible. We use a precise measurement system with 3D imaging to determine your perfect size, without going too small or too large, so that your breast augmentation will fit your body’s proportions and complement your figure. The result is breasts that you could have been born with.Once we have determined the size of the chest wall, we can choose the profile based on what you want or need to achieve. If you are seeking a natural look, then the diameter of the implant should be equal to or, more ideally, smaller than the width of your breast. The breast width is a measurement of how wide your breast is at the base, which should be measured at the level of the nipple. Choosing an implant that is smaller in diameter than your breast width will avoid the "side breast" fullness that is often associated with a more artificial appearance. Other than that, you should choose the implant based on volume, not on the dimensions of the implant. Bringing photos to show your board certified surgeon can help to finalize your decision, but please understand that these are of other people’s bodies and your results will probably be different. Breast implants may be placed in several ways depending on your individual body type and needs. Placement options include sub-glandular (beneath the glandular tissue, but above the pectoral muscle), or sub-pectoral placement (beneath both the muscle and the glandular tissue). If you were my patient, the advantages of each type of implant placement would be fully discussed with you during your initial consultation, and the proper treatment plan will be determined. Once again, the best way to assess your situation and give true advice about the sizing of your implants would be an in-person exam. Please see a board-certified plastic surgeon that specializes in aesthetic and restorative breast surgery. best of luck! Dr Schwartz Board Certified Plastic Surgeon #RealSelf100Surgeon #RealSelfCORESurgeon