I am 5'8, 180 lbs, and was told 700cc round moderate profile breast implant would be best?

Thank you for the question. Online consultants will not be able to provide you with specific enough advice to be truly helpful. Ultimately, careful communication of your goals (in my practice I prefer the use of goal pictures, direct examination/communication in front of a full-length mirror, and computer imaging) will be critical.  Best to discuss your goals, expectations, concerns, and questions directly with your carefully selected plastic surgeon, preferably prior to the day of surgery.
Generally speaking, the best online advice I can give to ladies who are considering 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. For example, I have found that the use of words such as “natural” or "C or D cup”  or "too big" etc may mean different things to different people and therefore prove unhelpful.
Also, as you know, cup size varies depending on him who makes the bra; therefore, discussing desired cup size may also be inaccurate. Again, the use of computer imaging has been very helpful during the communication process, in our practice.
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.
I hope this (and the attached link, dedicated to breast augmentation surgery concerns) helps. Best wishes for an outcome that you will be very pleased with.

Hi Shae,This is a larger than average size implant, but may be what you are looking for.  This is perhaps the hardest decision for a patient
to make, as well as the surgeon. Cup size estimates can be misleading, but I
generally advise patients that they will experience an increase of
approximately one cup size per 200 cc. You can try on implants in the office by
placing them into a special bra.Approximately 50 cc (1-2 oz.) is added to the final volume to account
for flattening of the implant in the partial sub-muscular pocket. Once you
decide on a size you like, then add on about 25-50 cc, because in real life the
implant will be flattened slightly by your tissues.Multiple measurements need to be taken to fit
an implant to your exact anatomy. Have your surgeon's office show you the
charts of the implant dimensions for the various profiles of silicone and
saline from the manufacturer. Then you and your surgeon can piece
together the puzzle by matching your measurements, with your wishes, versus
your tissue cover and the available implants to arrive at a surgical plan.Keep in mind larger implants tend to have
more problems over the years.Since
silicone implants wrinkle less than saline implants, they might be your best
bet.You can
also approximate this at home by measuring out an equivalent amount of rice
placed into a cutoff foot of old panty-hose, and put this in your bra.Wear this around the house for a while, and
see what you think.Implant size must
square with assessments of tissue cover, breast diameter, and chest wall width. Multiple measurements
of your chest wall are taken (seven in total). Implant size selection has been an issue of much discussion. Therefore, I use a wide variety of methods, but the implant size is
always established preoperatively.Also,
patients are advised to bring reference photos demonstrating their ideal size
and shape. A photo album of patient pictures is maintained to assist them.
These photos ultimately help in determining where the implants will be placed,
since they can be shifted inside (to provide more cleavage), to the outside, up
or superiorly, and down or inferiorly during surgery. In determining the final
size selection, I always place the highest priority on the preoperative
measurements and potential tissue cover. Then, the patient’s verbal requests
are factored into the analysis.Our
average size over the last 7,000 implants was 350. We use the quick recovery approach, so click on the
web reference link below to have this explained.Be sure to see only a board certified
plastic surgeon (by ABPS - The American Board of Plastic Surgery) who is a
member of ASAPS (The American Society for Aesthetic Plastic Surgery) and or a
member of ASPS (The American Society of Plastic Surgeons). Also, ask if they
have an established, high volume breast augmentation practice, performing several
hundred breast augmentations each year. Be sure the PS has been in practice for
a while, 20-years or more might be a good gauge.Does the PS offer all three incisions?Discuss the implant type (gel or saline),
shaped "gummy bear" or non-shaped, smooth or textured, implant pocket
(over or under the muscle) and the "quick recovery approach."Ask to see their before and after photos if
you didn’t see any on their website. If they are experienced, they should
have several 100 breast implant patients for you to view. I would also
recommend that your doctor offer you the chance to talk to past patients who
would be happy to discuss their experience with you. You need to feel
comfortable, so make sure the environment is safe as in an accredited surgery
center. Also, ask a prospective surgeon if he or she has ever published journal
articles in professional peer-reviewed journals, which they can provide
you.All
the best, “Dr. Joe”

The best cosmetic result in
any particular breast augmentation patient depends on a variety of factors,
including: your individual anatomy, realistic expectations, a thorough
discussion with the plastic surgeon about the options, and an understanding of
the pros and cons of any particular implant choice. Proper sizing is not just
about the number of cc’s. The thickness of your tissue, breast dimensions which
include the width, height, and projection, as well as chest wall width all need
to be considered when choosing an implant. Trying on implant “sizers” of
various shapes and volumes while wearing a tight t-shirt, bra, or bathing suit
at a preoperative visit will help you and your surgeon choose the optimal
implant.Most plastic surgeons would tell you that a 700 cc implant is an extremely large implant for a cosmetic augmentation.

Keep in mind that following the
advice from a surgeon on this or any other website who proposes to tell you
what to do without examining you, physically feeling the tissue, assessing your
desired outcome, taking a full medical history, and discussing the pros and cons
of each operative procedure would not be in your best interest. I would suggest
you find a plastic surgeon certified by the American Board of Plastic Surgery
and ideally a member of the American Society for Aesthetic Plastic Surgery
(ASAPS) that you trust and are comfortable with. You should discuss your
concerns with that surgeon in person.

Robert Singer, MD FACS

La Jolla, California