What size will a 300cc implant with a breast lift take me too with a Already C cup?

Yes, you’ll be a D-cup... but is it just size you want, or beauty?  Beyond choice of implant size, multiple other considerations determine how your breasts flow after such a complex procedure.  

It depends on what size you are starting from.  The implant selection should be based on a combination of your desired size, soft tissue dynamics, breast base diameter and skin elasticity.  I recommend an in-office examination as well as a detailed discussion with a surgeon who you are comfortable with.   Finally, make sure your surgeon is a Double-Board Certified Plastic Surgeon certified by the American Board of Plastic Surgery (ABPS), a member of the American Society of Plastic Surgery (ASPS), a member of the American Society of Aesthetic Plastic Surgery (ASAPS), and a fellow of the American College of Surgeons (FACS).Best,Dr. DesaiBeverly Hills Institute for Aesthetic Plastic SurgeryHarvard Educated, Beverly Hills & Miami Beach TrainedDouble Board-Certified Beverly Hills Plastic Surgeon

Hello,There is no reliable or reproducible way to equate bra cup sizes and breast implant size, and this is true for many reasons including subjectivity of how a bra fits and non-standardization of the bra garment industry.  I know this comes as a surprise given so much talk about it, but if you really look carefully at women who used bra cups as a goal and who posted after surgery, most of the time they are complaining that their desired cup size was not achieved, either too big or too small. Additionally, some surgeons like to regurgitate completely false equivalents between bra cups and implant volumes, for example '200 cc equals one cup size'.  I urge you very strongly to give up using bra cups as a measure for your aesthetic goals. Instead go visit a few ABPS certified/ASAPS member surgeons who will size you in-office using an unpadded bra and sizers, putting you in front of a mirror with a few of your favorite tops on.  This way you will get a real time view of how you will look.  Although not as high tech as a '3D Vectra', it is more effective and fool proof. Best of luck!

Hello and thank you for your question.  The
best advice you can receive is from an in-person consultation.  300cc may be able to accomplish your goal of a D cup.  The size, profile, and shape of the
implant is based on your desired breast size/shape, your chest wall
measurements, and soft tissue quality.  This decision should
be based on a detailed discussion with equal input from both you
and your surgeon.   Make sure you specifically look
at before and after pictures of real patients who have had this surgery
performed by your surgeon and evaluate their results.   The most
important aspect is to find a surgeon you are comfortable with. I recommend
that you seek consultation with a qualified board-certified plastic surgeon who
can evaluate you in person.
Best wishes and good luck.
Richard G. Reish, M.D.
Harvard-trained plastic surgeon

Dear Curious One1966,I understand your concern. However, without a proper assessment it would be difficult to determine. Determining the ideal breast size and matching that goal for the patient is the most difficult part of breast augmentation. It starts and ends with the patient. We have all of our patients find 3 photos of their desired breast size. We ask for naked breast photos because clothing can obscure the true size (push up bras). Next, we consult with patients and go over the photos and take detailed breast measurements during a physical exam. Next, we using a sizing algorithm to determine a range of implants that will work based on the exam and the measurements. Lastly, during the operation, we use silicone sizers in the operating room to see how the size actually looks in the breast. We sit the patient up in the operating room, while asleep of course, and compare the sizer result with their desired look photos. If its too small, we start the process over with a slightly larger implant. We don't stop until we get the perfect match. Of all of my breast augmentation patients, everyone of them have been happy with their size due to this detailed and meticulous process. You don't want to invest time and money into a result that is either too big or too small. It is best that you visit a board certified plastic surgeon for further assessment. Only after thorough examination you can get proper recommendations and advice. Daniel Barrett, MD, MHA, MS 
Certified, American Board of Plastic Surgery  
Member, Am. Society of Plastic Surgery

Exact cup sizes are hard to predict. Most likely adding 300cc to an already C cup breast would result in something in the D to full D range, but this depends on your body frame. It is usually more instructive to use sizers in the office during consultation with a board certified plastic surgeon, and combine the apparent projection you get using the sizers with imagery via surgical simulation software like Crisalix or Vectra, which can help you see the potential look from different angles with different implant size and styles. 

bet a D cup unlined bra that doesn't stretch and find out how much volume is needed to fill the cup then then add 10% to that volume to get your implant size that will create the look for that bra.  I would rather you focus on using sizers to get the look you desire and worry less about what cup size it is.

Thank you for the question.   
There is no accurate/reliable/predictable correlation between size/profile breast implant utilized and cup size achieved. For example, I do not think that the generalizations of "200 cc equates to 1 cup" hold any validity or are helpful in any specific or practical way.  In my practice, I ask patients not to communicate their goals, or evaluate the outcome of the procedure performed, based on cup size references. Generally speaking, patients undergoing the breast augmentation/lifting combination operation should understand that it is significantly more complex than breast augmentation surgery only and that it is associated with a significantly higher risk of complications and need for additional surgery. 
Also, patients undergoing the combination breast augmentation/lifting surgery should understand that there are limits as to how large of an outcome can be achieved, given that breast lifting surgery does involve breast skin removal. On the one hand, breast augmentation surgery is expanding the breast skin “envelope” while breast lifting is (by definition) tightening up the breast skin envelope. These 2 forces are counteracting each other. 
Therefore, it becomes important to remove the appropriate amount of breast skin and to use the appropriate size/profile of breast implants to balance these 2 forces appropriately and to allow for achievement of the patient's goals while minimizing risks of complications. 
In my practice, "tailor tacking" is an important part of the mastopexy and mastopexy/augmentation procedure. It involves TEMPORARY  closure of the skin (for example with temporary skin staples)  to double check the amount of skin that is to be excised during the procedure. This maneuver is done to ensure that enough skin, but not too much, is removed. On the one hand, it is important that enough skin be removed to achieve the aesthetic breast lifting results the patient is looking for; on the other hand, is important not to move too much skin creating tension upon closure and potential wide scars.
The tailor tacking technique is very important when performing breast augmentation/mastopexy procedures. Again, this technique allows for a double check of the skin excision prior to the actual excision being carried out. In this procedure (breast augmentation/mastopexy)  if too much skin is removed it will limit the size of implant that can be used and/or the surgeon may experience tension upon  closure of the skin resulting in  wide scars, wounds healing problems, and/or implant exposure.
Also, generally speaking, the best online advice I can give to ladies who are considering breast augmentation/lifting 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. Again, have a full discussion and communication regarding your desired goals with your plastic surgeon. This communication will be critical in determining which operation and/or 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 "D cup" 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. The use of computer imaging may be very helpful during this communication phase.
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. The use of temporary intraoperative sizers with the patient in the upright position makes selection of the best breast implant size/profile relatively easy.
Best wishes.