Implants replacement to 800cc achievable? (PHOTOS)

Hello and thank your for posting with photos. The answer is yes. Hard to say if that is an appropriate size for your without an in person evaluation, but you can certainly go bigger if you wish. Please keep in mind that an 800cc implant is very large. The larger you go the heavier they will be. This might be an issue on your back years to come. Implant weight is one of the factors related to ptosis. Meaning, the bigger they are the faster they might fall. Your stretch marks might also get worse if you go bigger. Plus, if you ever decide to go back to smaller implants, your will need extra scars to tighten the skin and lift your breasts. As long as you understand the pros and cons of going much bigger, I believe there is no problem with achieving your goal.Best of luck,Dr. Miguel Mota

For most women, 800 cc's is too large and gives them hard round balls for breasts. This is not pretty. Some in your photos are also not pretty. Also, that size is very heavy on your neck and shoulder, and tissue, and you will thin over time and sag. I do not recommend that size for you. When you are older, you may regret the damage you have done to your breasts.

I recommend an in person evaluation by a plastic surgeon to be measured and discuss your goals. After I measure and discuss goals with my patients, we then look at pictures of former patients with similar measurements with different size and style breast implants. My patients tell me that this process is very helpful in determining what size breast implant is right for them. 
Dr. Ted Eisenberg, Board Certified Plastic Surgeon and Author                           
RealSelf Distinguished Hall of Fame Inductee