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How to measure your bra size

  • 4 min read

Find your perfect fit with our bra size chart

If charts and numbers work for you, follow this guide for how to measure your bra size! If you'd like a little more info, read below for more tips & tricks on knowing how to measure yourself at home and how to know if your bra is fitting correctly! Or try our at home Bra Fit Quiz for a simple step by step guide to finding your bra size!
 

Bra Size Calculation Chart

Underbust Measurement (cm)
Measure firmly around ribcage, directly underneath breasts.
  8 10 12 14 16 18 20
  62-67 67-72 72-77 77-82 82-87 87-92 92-97
Overbust Measurement (cm)
Measure loosely around fullest part of bust.
AA 72-75 77-80 82-85 87-90 92-95 97-100 102-105
A 75-77 80-82 85-87 90-92 95-97 100-102 105-107
B 77-80 82-85 87-90 92-95 97-100 102-105 107-110
C 80-82 85-87 90-92 95-97 100-102 105-107 110-112
D 82-85 87-90 92-95 97-100 102-105 107-110 112-115
DD 85-87 90-92 95-97 100-102 105-107 110-112 115-117
E   92-95 97-100 102-105 107-110 112-115 117-120
F   95-97 100-102 105-107 110-112 115-117 120-122
G     102-105 107-110 112-115 117-120 122-125
H     105-107 110-112 115-117 120-122 125-127

Underwear Size Calculation Chart

Size Hip Waist
XS (8) 92 - 97 59 - 64
S (10) 97 - 102 64 - 69
M (12) 102 - 107 69 - 74
L (14) 107 - 112 74 - 79
XL (16) 112 - 117 79 - 84
2XL (18) 117 - 122 84 - 89
3XL (20) 122 - 127 89 - 94
4XL (22) 127 - 132 94 - 99

Bodysuit, Cami & Chemise Size Calculation Chart

Size Hip Waist Underbust
XS (8) 92 - 97 59 - 64 62 - 67
S (10) 97 - 102 64 - 69 67 - 72
M (12) 102 - 107 69 - 74 72 - 77
L (14) 107 - 112 74 - 79 77 - 82
XL (16) 112 - 117 79 - 84 82 - 87
2XL (18) 117 - 122 84 - 89 87 - 92
3XL (20) 122 - 127 89 - 94 92 - 97

 

How to measure your bra size at home

Measuring the Band Size
When measuring the band size, take a measuring tape and measure firmly just below the bust. This will tell you whether you are an 8, 10, 12... etc. 
 
Woman measuring her bra band size with measuring tape
 
Measuring the Cup Size
When measuring the cup size, take a measuring tape and measure loosely around the fullest part of the bust. This will tell you whether you are an A, B, C... etc. 
 
Woman measuring her bra cup size with measuring tape
 
Choosing your size
After taking your measurements, you may find that you fall in between a couple of sizes - remember not all 12B's are the same! We would always recommend trying the different options before making your final decision by either heading to one of our stockists OR, as we now offer FREE RETURNS you can try them all in the comfort of your own home! 
Check the cup size
Gently lift your breasts forward, to ensure they’re sitting correctly in the cup. If your breasts are spilling out or you notice unflattering lumps and bumps, your cup size is too small. If the bra doesn’t sit smoothly and there's a gap between you and the bra, try going down a cup size.Another reason for gaping cups is  incorrect style or shape. If your breasts are ‘teardrop’ shaped, you may be be better suited to plunge bras, rather than full-coverage.
Note: If the bra cup used to fit and you have not lost weight, your bra may need replacing. This is particularly common with stretch cup bras, which can stretch out or lose their shape over time.
Check the band
The band should be at the same level all the way around your body. If it’s riding up your back, it's too big. Try going down a band size or tightening your band. It should feel firm and secure, but you should also be able to slip two fingers beneath the band in back, and one in the centre in front. If you can't, you may need to loosen your band or go up a size. Also check that theside wing encloses the breast, with no bits bulging near your armpits. 
Check the straps
If your band size is too small, your straps will slip off your shoulder. If your band size is too big, you’ll end up tightening the straps to compensate, which will dig into your shoulders. Make sure the straps sit snug against your skin. If the straps are still falling off, consider a different style. Remember, balconette bras have wider-set straps.
Check the underwire
If you feel the underwire digging in, you may be in the wrong cup size (or the wrong style for you). Use the troubleshooting tips above to determine whether you should size up or down - poking can result from either a too big or too small cup size.
 Woman holding measuring tape learning how to measure bra size
 
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