Would 70ccs make a difference on a small frame? I'm currently a 30dddd/g with the 470ccs and want to be a 30dd

Thanks for your question! In my experience of doing thousands of breast augmentation surgeries, I’d say that if you want to “downsize”, you’re going to need to go down more than 70cc; probably more like 200cc, and probably with a lift, to get the result that you want & make it worth the money.  Again, this is where photos would really help. Best of luck to you!

Dear Can'tbeatemjoinem,breast implant type and sizing selection is a complicated process and requires a detailed consultation that includes a discussion of your goals, a detailed examination, and a lengthy discussion. But the decision will always start and end with the patient. When it comes to sizing, 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 it is 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, every one of them has 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.You should discuss your concerns with a board-certified plastic surgeon and make sure that your surgeon understands your goals.Daniel Barrett, MD
Certified, American Board of Plastic Surgery
Member, American Society of Plastic Surgery
Member, American Society of Aesthetic Plastic Surgery

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, Double Fellowship-Trained Beverly Hills Plastic Surgeon

Hi, I'm sorry you were pressured into something you did not want. As a 30G you will need to downsize at least 200 cc to achieve a 30DD bra size. Now, please take into consideration that bra manufacturers vary in sizing. In other words, don't get stuck on a number. I agree that a G cup is quite large for a person of your frame. Large implants (>300cc) are typically the cause of most breast augmentation revisions due to their unstable nature. The heavier the implant the more likely they are to cause chronic pain, soft tissue damage (regardless of where they are placed), capsular contracture, implant displacement, and other types of disfigurement. A 70cc reduction will not give you a DD cup. I hope this helps.Best wishes and kind regards,

Thank you for the question. In the end, exactly what operation you should undergo and what type/size/profile of breast implant should be utilized will depend mainly on what you are trying to achieve (in other words, what your goals are).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.
 During downsizing of breast implant surgery (sometimes) adjustment of the breast implant pockets (capsule adjustments) may be necessary to achieve the outcome you are looking for. Breast lifting may or may not necessary.  Much will be dependent on your physical examination;  specifically, factors such as the amount of redundant skin, quality of skin elasticity will be important,  and how much you wish to downsize.
Generally speaking, the best online advice I can give to ladies who are considering revisionary (downsizing) breast augmentation surgery 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 "down 2 cup sizes” or "C 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. 
3. Once you feel you have communicated your goals clearly, allow your chosen plastic surgeon to work with you in determining the best plan to achieve your goals.
I hope this helps. Best wishes.  

Cup size is very dependent on a variety of factors including the volume of the implant.  The size is also dependent on the projection of the implant, the surgeon's technique and the breast envelope.  What I do with patients is I show them on their own body what a A,B,C,D,DD,DDD look like. Then I show them what implants (silicone, saline, projection, basewidth etc) will achieve this result.  
good luck,