I had 400cc breast implants. I am now wanting to go bigger to the 500cc size. Is this possible? (Photo)

Hi there,
Thank you for your photo and question.
Yes. It is possible for you to upsize from 400cc to 500cc implants if you want to go bigger in size.
However, you'll need to be certain about your expectations and preferences with regards to your revision surgery. You'll need to take into consideration about the timeframe from your original surgery, your intrinsic tissue quality in upholding bigger heavier implants, as well as your individual life circumstances (eg. pregnancies, weight fluctuations etc) and various lifestyle factors. There are also other technical considerations involved in your new surgical approach with your preferred surgical technique and choice of implants with reference to its shape and dimension in addition to just size factors.
I highly recommend you seeing a fully qualified specialist plastic surgeon who is experienced in breast implant revision for further in depth advice.
Hope this helps.
Best wishes
Ellis Choy

Thank you for the question and picture.   Yes, It is usually possible to increase breast size further after initial breast augmentation surgery.  Of course, much will depend on your physical examination, when it comes to determining if and how much larger you are able to go safely.
Generally speaking, the best online advice I can give to ladies who are considering revisionary breast augmentation surgery (regarding breast implant size/profile selection) is:
1. Concentrate on choosing your plastic surgeon carefully.  Concentrate on appropriate training, certification, and the ability of the plastic surgeon to achieve the results you are looking for. Ask to see lots of examples of his/her work.
2. Have a full discussion and communication regarding your desired goals  with your plastic surgeon. This communication will be critical in determining  breast implant size/type/profile will most likely help achieve your goals. 
In my practice, the use of photographs of “goal” pictures (and breasts that are too big or too small) is very helpful. I have found that the use of words such as  “natural” or "C or D cup” or "up one cup size" etc means different things to different people and therefore prove unhelpful.
 Also, as you know, cup size varies depending on   who makes the bra; therefore, discussing desired cup  size may also be inaccurate.   
3.  Once you feel you have communicated your goals clearly,  allow your plastic surgeon to use his/her years of experience/judgment to choose the breast implant size/profile that will best meet your goals.  Again, in my practice, this decision is usually made during surgery ( after the use of temporary intraoperative sizers).  Viewing the patient's chest wall in the upright and supine positions, with temporary sizes in place, help select  the best breast implant size/profile for the specific patient.
My best advice: select your plastic surgeon carefully. Make sure that he/she has significant experience achieving the types of outcomes you will be pleased with. Then, communicate your goals carefully, as discussed above. Working together you will come up with a good plan to achieve your goals. Best wishes.