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How to Choose your Breast Implant Size

Implant: 390cc Anatomical, Medium Height, High Profile

How to Choose your Breast Implant Size

Choosing the right breast implant size is not just a matter of aesthetics – it involves careful consideration of anatomy, lifestyle, long-term health, and realistic outcomes. Patients benefit from expert guidance when making such a personal and medically significant decision.

Dr Guy Watts, a Specialist Plastic & Reconstructive Surgeon based in Perth, Western Australia, takes a tailored approach to every consultation. His clinic offers comprehensive assessments that help patients make informed decisions based on measurable data and individual goals. This article outlines the key considerations and clinical insights involved in selecting the best breast implant size.

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Why Breast Implant Size Matters

Breast implant size is a critical factor in determining the final appearance and feel of the augmented breast. The size not only influences volume but also affects the relationship between the implant and the chest wall, the tension on the skin, and the long-term stability of the breast shape.

Choosing the correct size:

  • Enhances proportion between the upper body and hips, helping patients achieve balanced results that align with their frame.
  • Reduces physical discomfort by avoiding overly heavy implants that could place strain on the neck, shoulders, or back.
  • Supports healthy tissue maintenance, as excessive implant weight or width can cause stretching of the skin, downward migration of the implant (commonly referred to as “bottoming out”), or thinning of the overlying breast tissue.
  • Plays a role in ageing outcomes, as a size too large for a patient’s anatomy may accelerate sagging or result in the need for earlier revision surgery.

In his Perth-based practice, Dr Guy Watts provides patients with the knowledge and support needed to prioritise both appearance and health when selecting an implant size.

Key Factors That Influence Implant Size Selection

Each patient brings a unique anatomical structure, lifestyle, and set of expectations to their breast augmentation journey. Selecting the right implant size requires understanding and balancing several interrelated factors.

✓ Chest Dimensions and Frame

The foundation of implant sizing begins with a detailed assessment of the patient’s chest dimensions. This includes:

  • The width of the breast base, which determines how wide an implant can be without extending beyond the natural boundaries of the breast.
  • The sternal width or distance between the breasts, which affects how implants appear when viewed from the front.
  • The overall shoulder-to-hip ratio, which helps ensure that the selected implant maintains aesthetic balance with the rest of the body.
  • The chest wall shape, including whether it is flat, convex, or concave, which can subtly affect how the implant projects forward.

Incorporating these anatomical markers into implant selection ensures that the final outcome feels proportionate and avoids crowding or excessive lateral fullness.

✓ Skin Quality and Breast Tissue

Skin elasticity and the thickness of existing breast tissue influence the body’s ability to accommodate an implant comfortably. During the consultation:

  • Elastic, resilient skin can more easily adapt to volume changes and helps maintain implant support over time.
  • Thinner or stretched skin, often seen after weight loss, pregnancy, or ageing, may limit how much volume can be safely introduced.
  • Existing breast tissue volume will also contribute to the final look, especially in patients opting for smaller implants or seeking subtle enhancements.
  • Asymmetry – a natural variation between breasts – is also considered, and occasionally two different implant sizes are recommended to achieve symmetry.

Dr Guy Watts uses tactile assessments and measurements to ensure implant sizing supports tissue longevity and aesthetic goals.

✓ Desired Appearance

Each patient has a personal vision of what they hope to achieve, and these preferences must be translated into clinical choices:

  • Some patients may request a fuller upper pole, resulting in a rounder or more projected look.
  • Others prefer a gentle slope and natural contour, especially if aiming for subtle enhancement or restoration of volume after pregnancy or breastfeeding.
  • Visual aids and sample implants help patients understand what various sizes and profiles will look like when placed under or over the muscle.

By taking time to understand your preferences and aligning them with anatomical considerations, Dr Watts creates outcomes that are both visually appealing and physically appropriate.

✓ Lifestyle and Physical Activity

The right implant should not interfere with your daily life. In fact, lifestyle considerations are often the deciding factor when choosing between otherwise suitable sizes:

  • High-impact athletes, such as runners, swimmers, or dancers, may benefit from lighter or smaller implants that reduce bounce and strain.
  • Professionals in physically demanding roles, including nursing or construction, might prioritise comfort, minimising the impact of implant weight during physical labour.
  • Parents or caregivers may need implants that allow unrestricted movement when lifting children or engaging in other regular physical tasks.
  • For patients planning future pregnancies, it’s important to discuss how weight fluctuations and breastfeeding could affect implant appearance over time.

All of these lifestyle insights are incorporated into the treatment planning process at Dr Watts’ Perth clinic.

DOWNLOAD DR WATTS’ GUIDE TO BREAST AUGMENTATION

Guide To Breast Augmentation

Implant Profiles and Projections Explained

Implant “profile” refers to how far the implant projects outward from the chest wall. Two implants may have the same volume but differ significantly in shape and forward projection due to profile selection.

Profile Options:

  • Low profile implants are broad and flat, offering minimal projection. These are often suitable for wider chest walls or for those desiring subtle enhancement.
  • Moderate profile implants offer a balanced combination of width and projection. They are commonly used in a variety of patient body types and aim to create a natural appearance.
  • High profile implants are narrow at the base but project more prominently. They can be selected to increase fullness, particularly in the upper portion of the breast, but must be carefully chosen to avoid exaggerated results.

Choosing the right profile is just as important as choosing the right size in cc. In his consultations, Dr Guy Watts offers detailed comparisons and allows patients to feel and visualise the difference between profiles.

The Role of Consultation in Decision-Making

The pre-operative consultation is more than a discussion – it is a critical planning session that informs every aspect of surgical care. In Perth, Dr Guy Watts delivers thorough, one-on-one consultations that cover:

  • Detailed anatomical measurements, including base width, nipple position, and skin fold distance, to inform implant volume and profile.
  • Use of imaging tools, such as 3D simulations, to preview different implant sizes and shapes directly on the patient’s image.
  • Trial with sizing bras or sizers, which allows patients to physically feel what different volumes may be like under clothing.
  • A thorough medical history review, ensuring there are no underlying factors that could affect the choice of implant or surgical plan.

This collaborative process empowers patients and ensures that their choice is not only aesthetically satisfying but medically safe.

How to Choose your Breast Implant Size Before and After Image   How to Choose your Breast Implant Size Before and After Image

Balancing Expectations with Realistic Outcomes

The desire for enhancement must be matched with respect for the body’s limits. While some patients may envision a dramatic change, it’s essential to weigh those desires against the potential effects on breast tissue, skin, and overall function.

Realistic planning helps:

  • Minimise post-surgical complications, including stretching, sagging, or thinning of tissue that can arise from overly large implants.
  • Preserve breast support, particularly for patients with active lifestyles or weaker skin tone.
  • Reduce the need for future revision surgery, by selecting a size that ages well and adapts to natural changes in the body.
  • Achieve lasting satisfaction, as proportionate, anatomically matched implants tend to retain a pleasing appearance longer.

Dr Guy Watts brings years of surgical expertise and clinical insight to this process, ensuring that each recommendation is informed by both patient goals and sound surgical judgement.

FAQs About Choosing Breast Implant Size

How do I know if an implant size will suit both my frame now and as I age?
This is a thoughtful consideration. Breast tissue and skin change with age, especially after pregnancy, weight fluctuations, or menopause. During your consultation, your surgeon will assess how your skin elasticity, tissue quality, and long-term plans may interact with different implant sizes. The goal is to select an implant that not only looks appropriate today but also accommodates your body’s natural changes over time without increasing the need for revision surgery.
Can breast implants be customised for my body shape or is it a set range of sizes?
Implants are available in a wide range of volumes, widths, and profiles, allowing for highly tailored selection. While the actual implants come in specific, manufactured sizes, their shape and dimensions can be precisely matched to your chest wall, breast base width, and skin characteristics. Your surgeon will work with these options to recommend a combination that best suits your anatomy and goals.
I’ve seen implant sizes listed in ‘cc’ - what does that actually mean in real life?
Implant size is measured in cubic centimetres (cc), but this doesn’t directly translate to cup sizes, which vary across bra brands. For example, a 300cc implant may create very different results on two people depending on chest width and natural breast volume. Your surgeon will help you visualise what a specific cc volume may look like on your body using imaging or implant sizers.
Can I choose an implant size based on photos of other people’s results?
While photos can be helpful for communicating aesthetic preferences, they’re not a reliable guide for choosing implant size. Another person’s body proportions, skin quality, and natural breast volume may be very different from yours—even if they appear similar. Photos can be part of your consultation, but size selection will always be based on your unique anatomy.
Is it possible to go up in size gradually over time instead of choosing a large implant right away?
Yes, staged procedures may be considered in certain cases, especially for patients with limited skin stretch or those wanting to minimise the impact of a significant volume change. This approach must be planned carefully and is not suitable for everyone. Your surgeon can advise if a gradual increase would be safe or effective in your case.
What happens if I choose a size and then change my mind before surgery?
Patients often refine their preferences between the initial consultation and surgery. Many surgeons allow time for review and offer a second appointment to finalise implant size. This is particularly helpful once patients have tried on sizers or reflected on their goals. It’s important to communicate any doubts early so your surgical plan can be updated before the procedure.
Are there medical reasons why certain implant sizes might not be recommended for me?
Yes. Some implant sizes may place too much pressure on your skin or chest wall, particularly if your tissues are thin or stretched. Larger implants can also increase the risk of certain complications, such as tissue thinning or changes to breast sensation. If an implant size carries medical risks for your anatomy, your surgeon will explain the reasoning and suggest alternative options that are more compatible with your health and body type.
Medical References for Choosing Breast Implant Size
  • The Effect of Patient Involvement in Implant Size Selection on Satisfaction After Primary Breast Augmentation – A study published in the Aesthetic Surgery Journal explores how patient participation in implant size choice impacts satisfaction rates post-surgery. It emphasizes shared decision-making and individualized planning. Aesthetic Surgery Journal (2025)
    https://academic.oup.com/asj/advance-article/doi/10.1093/asj/sjaf085/8133964
  • Our 5 Critical Decisions in Breast Implant Selection – This article from PubMed Central (PMC), affiliated with the U.S. National Institutes of Health, outlines a tissue-based measurement system combined with patient preferences to select implant size, emphasizing preoperative planning to reduce complications and reoperations. PMC (2025)
    https://pmc.ncbi.nlm.nih.gov/articles/PMC11995986/
  • Decision Making in Breast Implant Selection for Breast Reconstruction – Published in a peer-reviewed journal on ScienceDirect, this mixed-method study investigates factors influencing implant choice in breast reconstruction, highlighting personalized assessment. ScienceDirect (2023)
    https://www.sciencedirect.com/science/article/pii/S2352587823000712
  • Breast Augmentation Surgery: Clinical Considerations – A comprehensive review from Cleveland Clinic Journal of Medicine discussing patient assessment, implant selection criteria including body morphology, breast base diameter, and soft tissue characteristics, and shared decision-making. Cleveland Clinic (2019)
    https://www.ccjm.org/content/86/2/111
  • Predicting Final Breast Implant Size Using Tissue-Based Measurements – This article from Plastic and Reconstructive Surgery Global Open presents methods to predict implant size preoperatively using anatomical measurements to improve outcomes. PRS Global Open (2025)
    https://journals.lww.com/prsgo/fulltext/2025/05001/66__predicting_final_breast_implant_size_using.64.aspx
  • Breast Augmentation – StatPearls – NCBI Bookshelf – A government-supported educational resource providing an overview of breast augmentation, including implant selection principles based on anatomy and patient goals. NCBI Bookshelf (2024)
    https://www.ncbi.nlm.nih.gov/books/NBK482206/
  • Breast Implants – StatPearls – NCBI Bookshelf – This article discusses implant types, profiles, and the importance of anatomic measurements during consultation to guide implant size choice, emphasizing patient education and shared decision-making. NCBI Bookshelf (2022)
    https://www.ncbi.nlm.nih.gov/books/NBK441998/

Why Consult Dr Guy Watts in Perth?

When it comes to choosing a breast implant size, experience matters. Dr Guy Watts, a Specialist Plastic & Reconstructive Surgeon, offers a balanced, evidence-informed approach that empowers patients to make informed decisions with confidence.

His Perth clinic is equipped with modern imaging tools, surgical planning software, and a calm, welcoming environment designed to facilitate thoughtful discussions. His philosophy is grounded in anatomical accuracy, patient education, and long-term wellbeing.

Whether you’re considering breast augmentation for aesthetic refinement, reconstruction after surgery, or volume restoration, Dr Watts will support you with clinical excellence and patient-centred care at every step of your journey.

Further Reading

About Dr. Guy Watts – MED0001539378
FRACS (Plas) – Specialist Plastic Surgeon In Perth WA

Dr-Guy-Watts-Perth

Dr. Guy Watts  is a Specialist Plastic Surgeon (AHPRA MED0001539378) with an extensive career that spans across renowned plastic surgery clinics worldwide. His experience has been honed through invaluable experiences at esteemed establishments such as the New York Eye and Ear Infirmary and the renowned Pitanguy Clinic in Brazil.

Having collaborated with the foremost cosmetic plastic surgeons on a global scale, Dr. Watts has chosen to return to Perth after a 17-year journey of intensive training and invaluable professional experience to bring the latest practices and technology in cosmetic plastic surgery to his patients.

Dr. Watts is a Fellow of the Royal Australasian College of Surgeons (FRACS) and a Member of the Australian Society of Plastic Surgeons (ASPS),  Australasian Society of Aesthetic Plastic Surgeons (ASAPS) and the International Society of Aesthetic Plastic Surgeons (ISAPS).

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About CLINISPA

Clinispa is Dr Watts’ bespoke medical clinic performing Cosmetic Aesthetic treatments. At Clinispa, we offer advanced clinical treatments in a luxurious and calming environment, tailored to support your skin’s health and appearance.

Clinispa aesthetic services are performed by Dr Guy Watts’ nursing professionals, who have a passion for and solid understanding of facial aesthetics.

All Clinispa clients are considered individually, with a personalised treatment plan consisting of advanced scientific approaches to cosmetic aesthetics. We incorporate innovative technologies in conjunction with superiorly formulated skin care.

For more information about the full range of Clinispa Aesthetic of Cosmetic Treatments visit the Clinispa website

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