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Bra Fitting Guide  - Lingerie & Swimwear

How to measure yourself to find the size for a bra or swimsuit that feels comfortable

Following bilateral breast surgery, women often wear a bra band size that is far too small, thinking that having it very tight will help it stay in place even without breast tissue. But if the band size is too small, the shoulder straps will also be too small, the cups will be in the wrong position on the body, and the bra will “ride up.”

The importance of a good fit can’t be stressed enough; you probably know that many women wear the wrong size bra and that every clothing brand fits slightly differently. 

Professional Fitting Advice

If you are considering purchasing a new mastectomy bra or swimsuit we would recommend  that you visit a certified fit specialist to ensure you get the best fit possible. Amoena retailers have mastectomy fitters with the training and experience to help you avoid discomfort. We encourage you to rely on their fitting services – think of it as having your own personal wardrobe consultant.

Remember, your bra size can change due to age, diet or exercise, so it is important to have your fit checked regularly.

Alternatively, if you'd prefer, you can measure yourself using the guidelines below, however you may find it easier to ask someone to help you.

How to Measure Yourself

Whether you’re buying a new mastectomy bra or a swimsuit, you want it to fit well. 

Mastectomy Swimwear & Bra Fitting Size Chart

To determine your bra/swimsuit size or briefs, follow the instructions and chart shown above and below.

Band Size (underbust) 

Measure around the chest, underneath the remaining breast where the bra band sits, make sure the measuring tape is slightly lower in back and snugly fitting. center of your spine (diagram A).


lingerie and swimwear measuring guide


Cup Size (overbust) 

Now measure from the middle of your chest (sternum) to the center of your spine, but this time over the fullest part of your remaining breast (diagram B).

Double this figure to get your overbust measurement.


lingerie and swimwear measuring guide

Measure around the widest part of your hips (C).

This is your size for lingerie briefs or separate swimwear bottoms

More About Amoena Swimwear 

Amoena swimsuits and bikinis are sized to correspond with your typical dress size. 


To ensure the best fit possible we have swimwear available in different cup sizes. Most styles have B and C cup fittings, with a selection ranging from AA through to F.

A mastectomy swimsuit with pocketed cups gives you peace of mind if you like to stay fit with water sports. Our versatile Aqua Wave Swim Breast Form is made to fit and stay inside the pockets of our swimsuits.

Need Help?

If you are unable to find a swimsuit in the size you require, or would like help selecting a suitable size, please do call our helpline on 0345 434 7334 for advice. You can also arrange a personal fitting appointment at the Amoena shop (Hampshire, UK).