Choosing The Best Breast Implant CC Size vs Bra Cup Size

Breast Implant cc size

Breast Implant CC size – What does it mean for your bra cup size?

How do you decide the best breast implant cc size to suit your body and your lifestyle? Consider proportion and projection.

The breast implant cc size (volume measured in cc or cubic centimetres), and profile (the projection or ‘height’) is one of the key breast augmentation decisions for an outcome that looks natural and proportioned. Getting this balance right is a daunting task, but it’s not one you’ll be making alone.

Get the Breast Augmentation Surgery guide!

Breast Augmentation Guide Download


What are the drawbacks of implants that are ‘too small’?

  • If you get implants that you feel are too small for your body, you’ll no doubt be tempted to go back to the surgery table again and ask for ‘bigger’ prosthetics.
  • This often occurs after the initial tissue swelling from surgery occurs.
  • But with any plastic surgery operation, you’ll need to wait at least 6 – and ideally 12 months – for everything to heal properly.
  • And secondary surgeries are fraught with higher chances of a more pronounced scar, or delicate tissue damage from multiple surgeries – this is best avoided if at all possible.

How to avoid this problem with your breast implants?

  • Use computerised 3D technology to visualise the way the implants might look on your physique
  • Recognise this is only a ‘sample’ and is not predictive – humans, in real life after surgery, and machines, in visual outcomes, will always have differences – some can be significant BUT these technologies (such as Vectra models) are very helpful for visualisation from an external perspective
  • Wear fillers for a few days in different sizes, in many different outfits, and ask yourself:
    • Which ones FEEL most comfortable as I go about my daily activities (yoga, walking, cycling, stretching, working at the computer, etc)
    • Which ones LOOK the best to you in terms of proportion and projection?
  • Understand that the position of the nipple-areola complex (NAC) and the distance between the nipples – plus the location of the centre of the breast mound on the ribcage – all have an impact on what the implants will actually look like once they’re ‘in’.
    • For example, where they’ll sit when they are surgically placed into position under the existing tissues, or partially under the muscle.
    • What the upper pole will look like (cleavage-wise) once the implants are in place.

“While there’s no right answer – only you can decide – a good Surgeon will help you make that decision using a variety of methods to help you visualise – and experience – what each implant CC size will end up ‘looking like’ on your overall physique.”

What are the drawbacks of implants that are ‘too large’?

  • If you get implants that you, or others, feel are too large for your body, you’ll end up looking unnatural and disproportionate.
  • Your balance could be impacted, and gym activities might feel less comfortable – especially those requiring you to stretch forward (such as yoga or cycling)
  • You’ll need a much firmer support bra
  • Potentially, you’ll also need all new exercise gear to suit your larger upper body, and could conceivably end up looking heavier in weight than you actually are, simply due to volume.
  • Perhaps most importantly, heavy prosthetics can damage your breast tissues over time.
    • The heavier the implant, the quicker the breasts are likely to droop (or sag) over time.
    • Plus, when it’s time to replace them or take them out entirely (should you develop more natural tissues, for example, as you gain weight as you age), the skin will more likely need a lift than if you had smaller-sized implants.
    • It’s difficult to tell on this particular impact, though – as any size implant has to stretch the skin to some degree; and it depends on what age you are when you have your secondary replacement or removal surgery).
  • Remember, no implant lasts forever – the average recommended time span for breast implants is to replace the prosthetics every 10 years.

How to avoid this problem with your breast implants:

  • Sometimes ‘cleavage’ envy gets the better of us as we’re making our augmentation surgery decisions.
  • So choosing a Surgeon who brings ‘balance’ and ‘proportion’ to the breast implant surgery equation is paramount for a successful operation.
  • Computerised 3D technology is an excellent way to visualise the way the implants might look on your physique; but for larger sized implants, it’s imperative you also wear the fillers – and feel what that extra weight is like to carry on your upper torso.
  • Again, recognise 3D technology such as VECTRA is only a ‘sample’ and is not predictive.


  • If you want to avoid the costs of going back onto the surgical table the next year – to get larger CC prosthetics because you felt you went ‘too small’ with your original decision;
  • If you want your prosthetics to look great for years to come;
  • If you want to look natural and feel comfortable with your physique during all your typical activities including exercising and the gym;
  • And if you don’t want to look ‘cartoon-like’ where everyone is commenting on your chest size and forgetting to look you in the eye-getting the right size prosthetic is important.

The 3 best methods for making this decision

  1. Choosing the right Surgeon for breast augmentation – a Plastic Surgeon has much more experience than a so-called “cosmetic surgeon” who is NOT actually approved by RACS (they never graduated from serious plastic surgery tests, they could even be simply a GP or Dermatologist, not an actual accredited Surgeon who passed the very serious and extensive Surgical exams – buyer beware)!.
  2. Using 3D technology such as VECTRA
  3. Wearing different size fillers for several days in a row; and in different outfits; as well as at the gym, cycling, walking, running or your other daily activities – feel their average “weight” (volume) as well as projection (outward proportions, height).

Bra Cup and Implant CC Size (Breast Implant CC Choices)

Breast Implant size comparison

How many ccs in an implant equate to an extra bra cup size?

Asking how many cc’s are in a bra cup size is a question fraught with issues. The bottom line is there is no consistent answer. So if you’re considering which breast implant size (in terms of volume CC and projection) is best for YOUR physique, then consider what was mentioned previously

There are no real means to provide a consistent answer. The fact is that everybody is different, and every body is different. What a certain sized implant will do your physique can vary, based on numerous factors.

Factors that have an impact on your appearance before and after augmentation include:

  • The skin envelope and dermal tissue strength
  • Existing breast tissue composition (muscle vs fat)
  • Areola location, nipple size and distance between them
  • Surgical placement decisions – under or over muscle
  • Insertion options – inframammary fold or armpit incisions
  • Differences in existing breast tissues (anatomical variances between the left and right size, sometimes as extreme as 20% – which could mean you need a larger size on one side than the other).

The general synopsis of CCs in Breast Implant Size Choices and determining which is best for you

CC’s means cubic centimetres of volume – this is NOT a ‘bra cup’ measurement or cup size.

  • CC’s of volume are a standard, precise measurement – there is no variance.
  • Compare that to bra cup sizes; which have tremendous variances between brands.

Are bra cup sizes consistent between brands, or do they vary?

  • Brands of bras tend to follow their own proprietary sizing charts.
  • They are generally similar, but not identical, and the differences could be extreme – which is what you’ll find when online shopping for bras rather than going in, in person, and having a bra consultant help you make decisions that are actually appropriate for your particular body and cup size.
    • Example: a B cup or C cup in one bra brand could be a C cup or D cup – even an F cup – in another brand.
    • Not to mention that the style of a bra alters the way it holds our breast tissues (including post-augmentation surgery), and sits on our physique.

Think about it!  Your cleavage will likely look very different in a soft-sculpted T-shirt bra versus an underwire push up bra vs a sports bra or other type of garment. And just a reminder: after augmentation surgery, no underwire bras allowed for at least 12 months (or longer)! Why? It can interfere with healing and your scar.

Proportion and Projection: Breast Implant CC Sizes and Relationships to Bra Cup Sizes

Breast Implant cc size

Patients often say ‘I want to be a C cup’ or “I want to move from a B cup to a D”.

If only it were as simple as that!  It’s not, however, as we described above.

A good Surgeon is going to consider multiple things when they help you make a suitable choice.

Always Choose a Specialist Plastic Surgeon

“Always make sure you check that  your surgeon is an accredited Specialist Plastic & Reconstructive Surgeon (not just a cosmetic surgeon who doesn’t have RACS qualifications and might only be a Doctor, a GP or dermatologist).”

They should also have extensive surgical experience and a focus area on breast augmentation for ALL ages and body types; and/or breast lifts with augmentation, after pregnancy or ageing.

They might consider the following and should discuss with you, during your consultation, how these factors impact the outcome of the surgery. They should also cover RISKS! (Beware, anyone who downplays surgical risks, so you know you’ll be an informed surgical patient). Read the materials. Make an informed decision, but choosing a bonafide Plastic Surgeon with RACS is definitely a good start rather than someone who never got tested by RACS for their cosmetic or plastic surgery skills, and who didn’t spend a total of 14 years or more to become a Specialist Plastic, Cosmetic and Reconstructive Surgeon.

The best decision making when it comes to augmentation surgery is a collaborative effort. Both you and your Specialist Plastic Surgeon make an informed surgical decision together, in terms of implant cc size and how it will look on your overall physique. But ultimately, a good Plastic Surgeon will have technologies to help you decide; and offer recommendations based on their experience.

Physique Aspects that Impact Choice of Augmentation Implant Size (CC) and ultimate Bra Cup Size

  • Do your breasts, in general, sit high or low on your torso and rib cage (compared to the shoulder line, and navel)?
  • Do your breast tissues currently have any natural cleavage or are they generally more on the non-projected side?
  • Do your breasts tend to point outwards (or sit ‘East’ or ‘West’, meaning naturally pointing out to the side versus more towards the front)?
  • Are your nipples facing forwards, to the side, up or down? And are they similar in shape, size and the direction they are pointing?
  • Is your torso fairly petite or are you built a bit more on the athletic, solid side, or are you somewhere in between?
  • Is your rib case convex or concave?

Summary about choosing the best Breast Implant Size

The many varied aspects of your physique are factored into the breast augmentation size choice equation. By taking these carefully into consideration, as well as your lifestyle, you can make a decision that you’ll be happy with for years to come.

It may be slightly smaller or larger than you hoped; if so, just let that be for some time before you consider removal or replacement. Besides, in 10 years, your lifestyle might change, and when it’s time to replace them again – you’ll be able to decide to go larger, or smaller, then (depending on your tissue strength of course – which DOES change as you age, over time, and if you forget to wear that support bra as instructed!).

Ready to GO BIG?

Forget going big – go RIGHT for you!

Get the Breast Augmentation Surgery guide!

Breast Augmentation Guide Download

Call our Specialist Plastic Surgeons today for a no-obligation breast augmentation consultation, including 3D Vectra sizing choice assistance.  Get the augmentation you’ve been waiting for with the comfort of knowing you’ve made an informed, thoughtful decision about your breast implant CC size and projection choices.


Further Reading about Breast Implant Surgery

*This information is not to be taken as medical advice and individual experiences can differ substantially.

Last updated: 13/05/2022
Author profile image
Dr Craig Rubinstein - MBBS, FRACS (Plast)
Dr Craig Rubinstein MBBS, FRACS (Plast), a Specialist Plastic Surgeon, is one of Australia's most respected Melbourne Surgeons for Breast Augmentation, Breast Lift (Mastopexy), Breast Reduction surgery and Abdominoplasty procedures. Using advanced surgical techniques to gain better body contouring and natural-looking surgical results, Dr Rubinstein is highly regarded by peers and patients for best-practice Clinic Patient-care and patient education strategies. He published a chapter on corrective surgery for Breast Asymmetry. Qualifications/Training Fellow of the Royal Australasian College of Surgeons (FRACS) The Australasian Society of Aesthetic Plastic Surgery (ASAPS) The Australian Society of Plastic Surgeons (ASPS) The Australian Medical Association (AMA) American Society of Plastic Surgeons (ASPS) The International Society of Aesthetic Plastic Surgeons (ISAPS) Founder: Coco Ruby Plastic Surgery previously Cosmetic Surgery for Women and Men Bio Page:

Coco Ruby’s Specialist Plastic and ENT Surgeons

With a wealth of experience and training, our Specialist Plastic Surgeons are dedicated to best practice patient care and education, customising Breast Enlargement Surgery for each and every patient to best meet their needs and desired surgical outcomes.

coco ruby specialist plastic surgeons 

What to do next?

Our Patient Liaison Team can assist with any questions you may have when considering a procedure. You can send in an enquiry form below or call our Melbourne Clinic between 9 am – 5 pm Monday to Friday.

Phone 1300 264 811, Email us: or Book a FREE 15-minute Phone Chat with our Patient Liaison Manager or a Virtual Consultation with a Surgeon.

Disclaimer: Results depend on individual patient circumstances and can vary significantly. Results may also be impacted by a variety of factors including your lifestyle, weight, nutritional intake and overall health. Consult your Specialist Plastic Surgeon for details. This information is general in nature and is not intended to be medical advice nor does it constitute a doctor-patient relationship. Surgery risks and complications will be covered in detail during a consultation with your Surgeon.