How To Choose Your Breast Implant Size (Updated 2026)

There’s a simple process behind choosing your breast implant size: start with measurements that fit your anatomy, then use in-office tools to preview what looks right on your body. This guide covers how to choose your breast implant size by explaining base width and implant projection, then showing how implant sizers and Vectra® 3D imaging can help you narrow down the option that feels most natural for your frame and goals.

How Implant Sizing Works: Base Width + Projection

We offer a variety of options to women considering breast implants at our practice in Denver, Colorado. We offer both silicone and saline implants in many sizes in order to fit a range of breast dimensions and personal goals.

Which size is right? The basic premise of implant sizing is to match the base width of a woman’s breast with the diameter of the implant and vary the projection (how far the implant extends from the chest wall) to increase or decrease the overall size. But there are many implants that fit the width range of a given woman’s breasts.

Helpful Sizing Techniques

After narrowing the options down based upon breast width, there are two helpful techniques for  breast augmentation patients to determine which size they prefer most.

First, implant size is best determined by “trying on” the actual implants in a bra with the natural breast tissue. This method not only provides a real-life visual of enhanced breast sizes, but also gives women the feel of varying-sized fuller breasts.

Second, the Vectra® 3-D imaging system creates a virtual preview of breasts enlarged with any implant size currently available on the market.

These techniques give patients the control to choose their desired outcome as precisely as possible. This helps women feel they got it just right, avoiding:

• Surprises
• Disappointment over being too big
• Regret about not being enhanced enough

Common Breast Implant Sizes and What To Expect

Breast implants are typically measured in cubic centimeters (cc), and the “ideal” sizing depends on your frame, existing tissue, breast width, and desired fullness. That said, these ranges can help you understand what people often mean when they talk about “small,” “medium,” or “full” results:

• 150–200cc: Subtle enhancement; often adds a little fullness and shape while keeping the result as discreet as possible.
• 225–300cc: A noticeable but still natural-looking change for many body types; often chosen by patients who want more upper-pole fullness without going overly large.
• 325–400cc: Fuller look with more visible volume change; can create more cleavage depending on your anatomy and implant profile.
• 425–500cc+: More dramatic size increase; may be preferred by patients specifically seeking a bold, “augmented” look.

What Are “Ballerina Breast Implants?”

“Ballerina breast augmentation” is a term often used to describe a smaller, more natural, and proportionate enhancement, focusing more on a refined shape and subtle volume than a dramatic increase.

This look is typically achieved by choosing an implant that fits the breast width with modest volume and gentle projection, prioritizing a balanced silhouette that complements your frame. Depending on your anatomy and goals, some patients also ask about options like fat transfer or hybrid approaches.

Implant Size Does Not Equal Cup Size

Using cup sizes to delineate the volume goal is not feasible because there is no standardized measurement for cup sizes between bra manufacturers. In other words, a C cup represents different volumes at different stores. So the cup nomenclature is a moving target and doesn’t accurately help define patients’ desired outcomes.

Every Body Is Unique

Many women attempt to figure out which size is best for them by analyzing before-and-after pictures of breast augmentation patients on the web. This method is not usually helpful because of the many variables that differ from woman to woman, such as:

• Amount of existing breast tissue
• Breast shape, size, and dimension
• Body proportions, height, and shoulder width

Frequently, women come into consults with a strong idea as to their desired implant volume based upon web pictures, only to find that they like a completely different size once they try the implants on their own bodies.

Next Steps

The best way to choose your implant size is to start with measurements that fit your anatomy, then confirm your preferences with tools like implant sizers and 3D imaging. This surgeon-led approach helps you avoid guessing based on cup size labels or someone else’s photos.

If you have questions about implant sizing or breast enhancement surgery, request a consultation or call us at (303) 278-2600 to get started.

This blog post was originally written in August 2018 and updated for 2026.