How to Choose the Right Breast Implant Size and Shape for Your Body

Breast implant size is measured in cubic centimetres (cc), which refers to the volume of the implant rather than a specific bra cup size. This is important to understand, as the same implant volume can appear differently on different body types. Factors such as chest width, existing breast tissue, skin elasticity, and overall proportions all influence how an implant will look once placed.

Rather than aiming for a particular cup size, implant selection focuses on achieving balance and proportion with your natural frame. Your surgeon will assess your anatomy carefully to recommend implant sizes that are appropriate for your body and align with your expectations.

Understanding Breast Implant Shapes

Breast implants generally come in two main shapes: round and anatomical (teardrop). Each shape offers different aesthetic characteristics and may be suited to different goals.

Round implants tend to provide more fullness in the upper part of the breast and are commonly chosen by patients seeking a fuller appearance. Anatomical implants are designed to mimic the natural slope of the breast, with more volume in the lower portion, and may be preferred by those seeking a more subtle or natural contour. The most suitable shape depends on your anatomy, existing breast tissue, and desired outcome.

The Three Key Dimensions of Breast Implants

Breast implants are selected using three key measurements that determine how they will sit on your chest and shape the breast.

Base width: This refers to how wide the implant is and must align with the natural width of your chest. Choosing an implant that is too wide can affect the natural contour and comfort.
Projection: Projection describes how far the implant extends forward from the chest wall. Higher projection implants create more prominence without increasing width.
Volume: Volume, measured in cc, determines the overall size of the implant and contributes to fullness and shape.

Balancing these three dimensions helps achieve a result that suits your body structure and supports a natural, proportionate outcome.

Five Key Factors to Consider When Choosing Breast Implant Size

Your natural anatomy: Chest width, shoulder balance, height, and existing breast tissue all influence suitable implant size.
Skin quality and elasticity: Tighter skin may limit implant size, while looser skin can accommodate different volumes.
Lifestyle and activity level: Highly active individuals may prefer sizes that are comfortable during exercise and daily movement.
Long-term comfort: Larger implants may place more strain on tissues over time, which is an important consideration for longevity.
Personal goals: Whether you are seeking subtle enhancement or more noticeable fullness, your preferences guide the final decision.

Your surgeon will help balance these factors to recommend options that are both safe and aligned with your goals.

How Implant Size and Shape Work Together

Implant size and shape work in combination to influence the final appearance of the breast. A smaller implant with higher projection can create definition without excessive width, while a larger, lower-projection implant may provide a broader contour. Selecting the right combination helps achieve harmony between volume, shape, and your natural proportions.

Your Consultation for Breast Implant Sizing at Plastic Surgery Central

During your consultation at Plastic Surgery Central, your surgeon will take detailed measurements, discuss your goals, and guide you through suitable implant options. You may be able to trial different sizes using sizers to help visualise potential outcomes. This process allows for a personalised surgical plan, ensuring decisions are informed, realistic, and tailored to your individual anatomy.