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Getting your bra fit right need not be difficult & we’re going to show you just how. A good fitting bra is a game changer, especially it will change your appearance from the inside out. Not only will you feel more confident and supported, but a good fitting bra will be super comfortable & when chosen to match your outfit will make you look taller & thinner.

It is important to remember that your nursing bra size, like your clothing size will change, through your various stages of pregnancy and beyond. Using a measuring tape and our simple bra size calculator, will certainly help you ascertain your size & assist in advising on which type of maternity & nursing bras to buy and when.

Measuring yourself is key, although not being a exact science, we also recommend looking out for your existing bra fit symptoms, when determining the size you should be. It estimated that over 80% of women are wearing the wrong size bra, but this need not be the case. Simply look out for a few symptoms and you’ll be able to detect when its time for change.


At Cake Lingerie we are committed to ensuring the fit of our products. We recommend following the simple steps below to find your size.

Alternatively, you can have a look at our Videos on the art of bra fitting. Click here to download the fitting guide for all the Cake Maternity and Rosewater Bra Styles.

Measure Lower Bust

STEP 01:


While wearing a non-padded bra, measure around theband of the bra. (We recommend measuring ininches which will provide for a more accurate result)

The measuring tape should be level and snug.Round to the next whole number. Then referto the chart below to determine your band size.(If you measured 27.4 inches, then round to 28. Your band size is hence a 32)

  • US/UK/CA
  • AU/NZ
  • EU
Under Bust Measurement (Inches)
26 - 27 28 - 30 31 - 33 34 - 36 37 - 38 39 - 40 41 - 42 43 - 44
Your Band Size Is:
30 32 34 36 38 40 42 44
8 10 12 14 16 18 20 22
65 70 75 80 85 90 95 100
26 - 27 28 - 30 31 - 33 34 - 36 37 - 38 39 - 40 41 - 42 43 - 44
30 32 34 36 38 40 42 44
26 - 27 28 - 30 31 - 33 34 - 36 37 - 38 39 - 40 41 - 42 43 - 44
8 10 12 14 16 18 20 22
26 - 27 28 - 30 31 - 33 34 - 36 37 - 38 39 - 40 41 - 42 43 - 44
65 70 75 80 85 90 95 100
Measure Lower Bust

STEP 02:


Now measure around your breasts where they are attheir fullest. (Use the same care as in the previous step)

Round off to the next whole number (If you measured 34.6 inches,then round to 35) to get your bust size.

STEP 03:


Now deduct ‘BAND’ measurement from your ‘CUP’ measurement and refer to the table below to work out your ‘Cup Size’.

Example (inches): 35” (CUP) – 32” (BAND) = 3 (C cup - your recommended size is a 32C

If Difference is (INCHES): INCHES 0-1 2 3 4 5 6 7 8 9 10 11 12 13
Your US/CA/EU Cupsize is: US/CA/EU A B C D E F G H I J K L M
Your UK/AU/NZ Cupsize is: UK/AU/NZ A B C D DD E F FF G GG H HH J


Use your current bra size and based on the symptoms of the fit, determine your needed bra size.

The fitting advice should be used as a guide only.

Please note that using a measuring tape does have a human element, cannot take into consideration your pregnancy stage and the dimension/shape of your breasts, to name a few variables. The bigger your bust, the more chance that the tape measure will not provide an accurate reading of your size.

We ideally recommend being fitted by a professional bra fitter in store.

Need more help?


  • 1. When should I fit & buy a nursing bra

    At approx. 8 months of pregnancy

  • 2. What are the common fit issues to avoid

    Back band is too tight or too loose

    Straps are loose (slipping off the shoulder) or too tight (cutting in)

    Cups are small (restricting the breast tissue) or too big (gaping)

  • 3. How can I tell if my nursing bra is fitted correctly

    The back band will sit horizontally across the back and not ride up. It should fit firm but not too tight.

    Your breasts should be fully incased in the bra cups. The breasts should not be spilling out the top, sides or bottom of the cups, nor should there be any wrinkling in the fabric.

    The bra cups should be smooth and the wire should sit neatly under and around the breasts. Most importantly the bra should feel comfortable.

  • 4. How many nursing bras do I need

    It is advisable to have at least 3 nursing bras. One to wear, one in the wash and one in the drawer.

  • 5. What's the best nursing bra for me?

    This depending on your lifestyle choice & your personal preference.

    Seamless bras are an ideal sleep bra or transitional bra. They will provide comfort and stretch for a growing or fluctuating breast.

    Contour bras are ideal for women who wear a lot of T-shirts and want a bra that will provide a smooth profile from under clothing.

    Sports bras are designed specifically for exercise. They contain more support structures to support breasts during high to low impact exercise.

    Non-wire bras are ideal for women who are after a structured comfortable fit.

    Flexible wired bras are ideal for women who are looking for great shape and the extra lift.

    Learn more about the best bra for your stage of pregnancy.


Get Our Nursing Bra Guide

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