How to Measure Yourself for a Mastectomy Bra That Truly Fits
Sep 23rd, 2025

Finding the right fit after breast surgery can feel overwhelming at first. Learning how to find your bra size and using a breast prosthesis size chart can make the process easier and more accurate. Once you have your measurements, you can focus on choosing mastectomy bras that support your healing and fit comfortably for everyday wear.
We’ve helped thousands of women do exactly that, and it all starts with a few simple measurements.
Why Proper Mastectomy Bra Fitting Matters
Your body changes after surgery. Standard bra sizes might not account for asymmetry, scarring, or the weight of a breast prosthesis. A poorly fitted bra can cause shoulder pain, skin irritation, or gaps where your breast form shifts. A proper breast form fitting ensures your prosthesis sits comfortably against your chest wall and moves naturally with your body. Certified fitters can help you determine the right shape, weight, and bra style for your needs.
Getting your measurements right helps you choose mastectomy bras that distribute weight evenly. The right fit prevents the band from riding up and keeps pockets in place. The American Cancer Society points out how important properly fitting garments are during mastectomy recovery.
Step-by-Step Guide to Measuring Yourself for a Mastectomy Bra
This section acts as a post-mastectomy bra guide to walk you through each step of finding your correct size and choosing supportive features for your needs after surgery.
Find a place that’s comfortable where you can take your measurements. Wear a soft, non-padded bra or go without one, and stand in front of a mirror so you can check that your measuring tape stays level.
Tools You'll Need for Accurate Measurement
Grab a soft fabric measuring tape; the kind used for sewing will work. Have a pen and paper within reach so you can write down your numbers before you forget.
How to Measure Underbust and Overbust
Use this simple bra measurement guide to make sure your mastectomy bra is comfortable and keeps your breast forms where they need to be. For your band size, wrap the tape snug around your ribcage right under your bust and measure in inches.
Next, measure the fullest part of your bust. If you have a breast form, wear it with a comfortable bra while you measure. Subtract your underbust measurement from your overbust measurement. Every inch of difference is equivalent to a cup size. This is how to find bra size after surgery.
Checking for Correct Cup and Band Size
Round your band measurement to the nearest even number. So, if you measured 33 inches, then your band size would be 34. Some women go up one band size after surgery for extra comfort around their surgery site.
When you try the bra for the first time, use the loosest hook. The elastic will ease up with time, and when that happens, you can move to tighter hooks.
Using a Breast Prosthesis Size Chart
Match your measurements to the breast prosthesis size chart of whatever manufacturer you choose. This is important because different brands size their breast forms differently.
Most charts list band size across the top and cup size down the side, so just find the point where your measurements intersect. You need to think about weight when choosing a breast form. After surgery, you’ll probably want to start with lightweight foam forms, but keep in mind later on that heavier silicone prosthesis needs a mastectomy bra with reinforced pockets and wider straps.
Remember also that your measurements might shift during the first year after surgery as swelling decreases. For more guidance, read our post about how to find the right bra size after a mastectomy.
Fitting Considerations with American Breast Care Products
American Breast Care designs its products to work together as a system. Their breast forms match specific bra styles for optimal comfort. Check their fitting recommendations when you review our American Breast Care products.
Their sizing runs true to standard bra measurements. If you fall between sizes, going up is usually the most comfortable option. The brand's pocketed bras have secure, stretchy pockets that hold forms close to your chest.
Tips for Choosing the Right Mastectomy Bra
Start with at least two bras so you can wash one while you wear the other. Cotton blend fabrics are more breathable and gentler around scars. Front-closure bras are easier to put on.
Look for wide, cushioned straps that won't dig into your shoulders. Three-hook closures give you more adjustment options.
Where to Find a Breast Prosthesis Near You
Our certified fitters can help if you're searching for breast prosthesis near me. Check out our new products for the latest styles.
We’re happy to guide you through every step. Whether you're choosing your first post-surgery bra or trying something new, we'll help you feel confident and comfortable. Contact us for personalized fitting support.
Many insurance plans cover mastectomy bras and breast forms if you get a prescription from your surgeon. The National Cancer Institute is a good place to find helpful information about insurance coverage. And, of course, we’re here if you have any questions.
FAQ
How do I measure my size for a mastectomy bra?
Wrap a soft measuring tape around your ribcage under your bust for band size. Then measure the fullest part of your bust while wearing your breast form. Subtract the first number from the second to determine cup size.
Can I use a regular bra size chart after a mastectomy?
Regular charts provide a starting point, but mastectomy-specific sizing accounts for prosthesis weight and pocket placement. Your band size might increase one size for comfort around surgical areas.
What is the best bra for post-mastectomy comfort?
We recommend front-closure bras with wide straps and seamless cups for early recovery. Look for cotton blends with secure prosthesis pockets and three-hook back closures.
How do I choose a breast prosthesis that fits correctly?
Match your bra measurements to the manufacturer's size chart. Remember that silicone forms need stronger support than lightweight foam.
Where can I find American Breast Care bras near me?
MastectomyShop.com ships American Breast Care products throughout the US. We provide remote consultations and fitting guidance over the phone.
How often should I check my bra size after surgery?
Remeasure every three to six months during your first year after surgery, because swelling and your body weight affect the way your bra fits. Also, remeasure if your bra feels uncomfortable or if your breast form moves around.