650cc medium profile implants. What bra size will I get?

Dear Boss Lady from that 323,I understand your concern and it is quite normal to be concerned about the outcome following a breast augmentation surgery. However, you are still in the very early stages of the healing process.Your will need to be patient at this moment and follow what your surgeon has instructed you to do post operatively.At the early stage of the healing process, the tissues around the implants are still swollen. Once the swelling subsides and the implants drop to their final position, you will be able to see the final result of your breast augmentation surgery.Daniel Barrett, MD
Certified, American Board of Plastic Surgery
Member, American Society of Plastic Surgery
Member, American Society of Aesthetic Plastic Surgery

Dear Ms. Boss Lady from that 323,
Thank you for your story, questions and photos. 
Nothing substitutes for a personal evaluation and a face to face discussion of your options. Many factors need to be taken into consideration than just your desired breast volume. Unfortunately without a exam of your tissue and measurements I can give you general information that I hope you find helpful.
Your final desired breast appearance is a combination of your current breast appearance, size, shape and location of the implant chosen
There are many decisions both you and your Plastic Surgeon needs to make.
Based on your photos, my answer to your specfic questions are:
1) I in general prefer that implants be placed under the muscle (dual plane) because of the lower incidence of capsular contracture and the coverage the muscle provides.
2)I would advise round silicone gel filled implants (the profile to be determined by your chest measurements: see below)
3)Volume size to be determined as described below
4)the inframammarry incision is associated with lowest rate of post operative capsular contracture.
5) At your preop appt. and on the day of surgery bring several model photos of what you want your final breast appearance to look like 
Your final decision should be based on personal consult with a Bd. Cert. Plastic Surgeon who will examine you and go over that which is best for you. The following are some of the topics you may want to discuss and why. 
General overview of your choices and discussion points:
IMPLANTS 
1) normal saline fill vs silicone gel fill
2) profile: low profile to high profile (choice based on chest measurements)
3) shape: form stable vs round
PLACEMENT OF IMPLANTS
1) sub pectoral, dual plane
   + less chance for internal scarring (capsular contracture)
   + padding from the muscle therefore less chance of implant palpability (rippling)
   - varying degree of animation upon pectorals major contraction ( breasts moving)
   - longer immediate recovery
2) supra pectoral
    + in borderline ptosis (breast sag) can provide alternative need for mastopexy
    + faster immediate recovery
    + animation upon contraction of pect. muscle is nil 
    - increase chance of internal scarring (capsular contracture
    - increase potential for breast implant palpability (rippling)
ACCESS INCISION
1) periarolar
2) inframammary
3) axillary
BREAST MOUND
1) symmetrical 
2) equal size
3) breast fold location
NIPPLE/AREOLAR POSTION
1) normal 
2) high
3) low
4) symmetrical 
5) too large
SKIN QUALITY
1) stretch marks
2) thin skin
3) elasticity 
SIZING
is a very personal choice
1)implants come in "cc" sizes not cup sizes
2) 30 cc 1 ounce
3) purchase a full bodied, non padded bra and take a nylon stocking and fill until you reach the desired size you desire....measure the volume using a measuring cup and convert to cc's.
4) If implants placed under the muscle I usually recommend adding 10% to measured volume to compensate for the flattening affect of the subpectoral placement  
COMPANIES
I personally choose the company that the breast implant base measurements and match to the patients chest measurements. Sientra only makes Silicone Gel filled implants. Ideal only makes Normal Saline implants (with internal baffles). Allergan and Mentor make both silicone gel and Normal Saline filled implants.
1)Allergan
2)Mentor
3)Sientra
4)Ideal
Please bring several model photos of your desired breast appearance and a list of questions to  your consultative appointment and make sure your Plastic Surgeon is Certified by the American Board of Plastic Surgery and ideally a member of the American Society for Aesthetic Plastic Surgery (denoting by membership as having met additional criteria and a focus on Cosmetic Plastic Surgery).
Best wishes,
Dr. R. A. Hardesty, MD, FACS
Diplomate and Certified by the Am. Bd. of Plastic Surgery
Awardee:RealSelf top 100 
wwwimagineplasticsurgery.com
4646 Brockton Ave
Riverside, Ca 92506
(951) 686-7600