How to Measure Maternity Bra Size


If you’re now starting to notice physical changes as a pregnant woman, it’s probably the right time to buy a maternity bra. And to make the process a lot easier, allow us to teach you how to measure maternity bra size.

Finding the right size is super-easy! You just need a measuring tape and a way to take notes. You may bring a pen and paper or just use your mobile phone.

It is also essential that you have to do the process in front of a full-length mirror. To perfectly represent your true form with a maternity bra, wear a non-padded bra while measuring your size.

Without further ado, here are two ways on how to measure maternity bra size:

Measure the part beneath your underarms, not the section under your bust.

When it comes to regular bras, the trick to get the band measurement is by measuring the lower part of your rib cage. With maternity bras, however, you have to ensure a bigger size. That’s why you need to focus on the part under your armpits.

All you need to do is wrap the measuring tape beneath your underarms. Next, turn sideways to see if the tape is parallel to the floor along with your breasts and your back.

Make sure that the measuring tape is tight enough without constricting your chest. Don’t put your fingers between your skin and the tape.

Disregard the measurement if it’s an odd number. You need to round it up to the nearest even number for a bigger size. For example, if you get 35 from the tape, make it 36.

Take the full measurement of your breasts.

To guarantee that you’ll measure the entirety of your breasts, wrap the measuring tape around your back and over your nipples. The result should be bigger than the rib band measurement we discussed earlier.

Adjust the measuring tape so that its end is at one side of your breast. Hold it with just one hand to let your free hand press the tape in the middle of your breasts.


For the final part of our discussion on how to measure maternity bra size, simply subtract the rib band measurement from the cup size to get the correct letter. B represents 2 while C, D, DD (E), and DDD (F) are 3, 4, 5 and 6 respectively. Lastly, combine the rib band measurement and the letter.

To give you an alternative to maternity bras, check out some of the best racerback bras. Racerback is great for support. Meanwhile, as an example of products you may use after pregnancy, enjoy our list of ideal belly bands.