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How To Measure Your Bra Size When You Have Uneven Breasts

To help you find the best bra for your beautifully imbalanced boobs we’ve pulled together some tips and suggestions from experts who understand breast asymmetry and how to measure for bras with uneven breast sizes.


How to measure your bra size when you have breast asymmetry

Measuring Tips For Bras With Uneven Breast Sizes

Here’s where we get to the bra measuring nitty gritty (or should we say, titty gritty)! We always suggest that you give yourself enough time to find the right bra fit. It can take a little trial and error to measure and find the perfect bra, especially when you have uneven breast sizes. It is a worthy quest though, as the benefits of wearing the correct bra size are vast! Set aside some time especially for this ‘breast quest’, be that at home or by booking an appointment at a lingerie shop. Don’t be disheartened if it takes a couple of sessions to find something that’s right for you and your boobs - it will be worth the effort. We’ve put together a step by step guide to help make finding a bra for your uneven boobs as simple as possible.

Measure Your Uneven Breasts For a Bra

Measuring bra band size with breasts of different sizes

Step 1 - Measure your bra band size

The band of your bra gives around 80% of the support for your bosom (a bit of bra science there), so it needs to be right. Ideally it’s best to get someone to take your band measurement, but if you are measuring yourself, ensure the tape measure is snug to the base of your breasts and level across the back below the shoulder blades.

How to measure your band size;

  • Place the end of the tape measure in your non-dominant hand on that same side of your body, and hold to the breast directly below your armpit (where the bottom of your bra band sits).

  • Hold the tape measure firmly in place with your non-dominant hand. Then, use your dominant hand to bring the tape around your back and back across the front at the base of your breasts.

  • Ensure the tape is flat to your skin and use your dominant hand to pull the measure tightly and snugly to meet the end in your other hand.

  • Take a note of this measurement in inches. If your measurement is an even number in inches, this is your band size. If it is an odd number you can round up or down (if you have a lean build, round down. If you have a fuller, softer build, round up).

**Top Tip** Remember that tape measures do not have as much ‘give’, so the band of a bra will be more forgiving when tried on. The most common bra fitting error is bra bands that are too loose, which significantly throws off the rest of the bra size. This results in a poorly fitting and poorly performing bra which does not support your breasts as it should.

Measuring for bra when you have different cup sizes

Step 2 - Measure your Bust/Cup size

This is the juicy bit, as taking bust measurements can be a little different when measuring for a bra with uneven breasts. Whilst in reality ALL breasts have some level of difference, we are specifically talking about our beautifully imbalanced asymmetric bosoms here.

For slight asymmetry you may be able to use the traditional measurement method by passing the tape measure around the back and measuring across the fullest part of the bust (both breasts).

This doesn’t work so well for more prominent asymmetry, so instead we're going to share with you how to measure the larger breast only.

Bra sizing is based on the assumption of breast symmetry (we know, it’s bonkers!) so if you have a difference of more than 1 cup size, it can help if you measure to allow enough space for the equivalent of two of our largest breasts. This will ensure that your bigger breast is properly supported in the bra cup.

  • Place the end of the tape measure in your non-dominant hand directly below your armpit, to the side of your breast. This time we will be measuring the larger breast only, rather than all around the bust.

  • Bring the measure to the centre of your chest, between your breasts. Be careful not to squeeze the tape measure into the breast tissue, but rather gently rest on it. Here you are measuring from the between the breasts to the side of the breast, under your armpit (measuring only the larger breast).

  • Note this measurement in inches, and then double it.

  • Next, place the tape measure at the side of the breast again, and now bring it around your back to the side of your smaller breast under the armpit, taking a back measurement only (from side boob to side boob).

  • Finally, add these two figures together and this will be your bust measurement

Measuring bra band size with uneven boobs

Step 3 - Calculate your overall (suggested) bra size

Here comes the bra mathematics, or algeBRA as we like to call it!

  • Simply put, the bigger the difference between band and bust, the bigger the breast volume and therefore cup size.

  • For every inch of difference, your cup size will go up a letter. The smallest difference starts with an A cup, which is a difference of 1 inch between your band and bust measurement (or AA for less than an inch difference).

  • A difference of 2 inches is a B cup, 3 inch difference is a C cup and so on.

  • To complicate things a little, when you get past a D cup, there are some cup sizes which have double letters, including DD, FF, GG, HH and JJ. This differs interna