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Step 1: Taking The Measurements

Two measurements need to be taken. The ribcage circumference (measurement A) and the bust circumference (measurement B). Both measurements need to be recorded in inches. The measuring tape should sit firmly, but not tightly against the skin. You should be breathing out when taking the measurements.

Step 2: Determining The Band Size

Measurement A will determine the band size.

28” = size 6                             38" = size 16

30” = size 8                             40" = size 18 

32” = size 10                           42" = size 20

34” = size 12                           44" = size 22

36” = size 14                           46" = size 24

Step 3: Determining The Cup Size

Determine the cup size by doing a simple calculation to measure the difference between the ribcage size and the bust size. Measurement B (in inches) – Measurement A (in inches).

Eg Measurement B = 40", Measurement A = 36” = difference of 4” = D cup

Eg Measurement B = 50”, Measurement A = 42” = difference of 8” = FF or G cup

Difference of 1 = A cup             Difference of 7 = F cup

Difference of 2 = B cup             Difference of 8 = FF/G cup

Difference of 3 = C cup             Difference of 9 = G/GG cup

Difference of 4 = D cup             Difference of 10 = GG/H cup

Difference of 5 = DD cup          Difference of 11 = H/HH cup

Difference of 6 = E cup             Difference of 12 = HH/J cup 

We hope you enjoy the tutorial series we've put together to help you select your best bras online. 

Please get in touch via the chat function on our website with any questions, we're here to help. 

Most women wear the wrong size, even bra fitters are sometimes limited with what sizes they can supply to you and may have made mistakes with your past bra fittings.

Like any other garment, the sizing on the tag is a guide. Bra brands can use different scales or sizing systems.

The band the runs around the ribcage is responsible for delivering most of the support. This needs to be firm, but not uncomfortably tight.

The shoulder straps are there to help stabilise the breast, they should not take the weight of the breast. Relying on these for support will result in discomfort and the potential for long term damage.

Lots of women think underwire is the most supportive option. In reality the role of underwire is to shape and separate the breast. It is not there to stop the breast from bouncing during activity. High-quality well-fitted non-underwire Sports Bras can offer the highest impact support, even for the G cup+ sizes.