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Finding the perfect fitting bra is not that hard. The first step is to determine your body size, which is based on your ‘under bust’ size. The second step is to determine your cup size, which is based on your ‘over bust’ size and how it ‘fits’ with your body size (using our clever fitting matrix below).

BODY SIZE 8 10 12 14 16 18 20 22 24 26
UNDER BUST 62 - 67 68 - 72 73 - 77 78 - 82 83 - 87 88 - 92 92 - 97 98 - 102 103 - 107 108 - 112
Cup A 77-79 82-84  87-89  92-94  97-99  102-104  107-109  112-114
Cup B 79-81  84-86  89-91  94-96  99-101  104-106  109-111  114-116  119-121  124-126
Cup C 81-83  86-88  91-93  96-98  101-103  106-108  111-113  116-118  121-123  126-128
Cup D 83-85  88-90  93-95  98-100  103-105  108-110  113-115  118-120  123-125  128-130
Cup DD 85-87  90-92  95-97  100-102  105-107  110-112  115-117  120-122  125-127  130-132
Cup E 87-89  92-94  97-99  102-104  107-109  112-114  117-119  122-124  127-129  132-134
Cup F 89-91  94-96  99-101  104-106  109-111  114-116  119-121  124-126  129-131  134-136
Cup G 91-93  96-98  101-103  106-108  111-113  116-118  121-123  126-128  131-133  136-138
Cup H 93-95  98-100  103-105  108-110  113-115  118-120  123-125  128-130  133-135  138-140


Did you know that if you fit into one bra size, chances are you’ll fit into several other sizes too? Bra size doesn’t work the same way as clothing sizes as the band size varies with the size of the cup like a ratio.

If you go up a band size, you’ll go down a cup size and similarly, if you go down a band size, you’ll go up a cup size.

For example if you’re a 12C, you could also fit a 10D (down a band size and up a cup size) or 14B (up a band size and down a cup size).


Different sizing used across the globe can be confusing! Use our handy size conversion chart to convert any bra size into yours!

8A 30A 30A 65A 80A 30A
8B 30B 30B 65B 80B 30B
8C 30C 30C 65C 80C 30C
8D 30D 30D 65D 80D 30D
8DD 30DD 30DD 65E 80E 30DD
8E 30DDD 30E 65F 80F 30E
10A 32A 32A 70A 85A 32A
10B 32B 32B 70B 85B 32B
10C 32C 32C 70C 85C 32C
10D 32D 32D 70D 85D 32D
10DD 32DD 32DD 70E 85E 32DD
10E 32DDD 32E 70F 85F 32E
10F 32F 32F 70G 85G 32F
10G 32G 32G 70H 85H 32G
12A 34A 34A 75A 90A 34A
12B 34B 34B 75B 90B 34B
12C 34C 34C 75C 90C 34C
12D 34D 34D 75D 90D 34D
12DD 34DD 34DD 75E 90E 34DD
12E 34DDD 34E 75F 90F 34E
12F 34F 34F 75G 90G 34F
12G 34G 34G 75H 90H 34G
14A 36A 36A 80A 95A 36A
14B 36B 36B 80B 95B 36B
14C 36C 36C 80C 95C 36C
14D 36D 36D 80D 95D 36D
14DD 36DD 36DD 80E 95E 36DD
14E 36DDD 36E 80F 95F 36E
14F 36F 36F 80G 95G 36F
14G 36G 36G 80H 95H 36G
16B 38B 38B 85B 100B 38B
16C 38C 38C 85C 100C 38C
16D 38D 38D 85D 100D 38D
16DD 38DD 38DD 85E 100E 38DD
16E 38DDD 38E 85F 100F 38E
16F 38F 38F 85G 100G 38F
16G 38G 38G 85H 100H 38G
18B 40B 40B 90B 105B 40B
18C 40C 40C 90C 105C 40C
18D 40D 40D 90D 105D 40D
18DD 40DD 40DD 90E 105E 40DD
18E 40DDD 40E 90F 105F 40E
18F 40F 40F 90G 105G 40F
18G 40G 40G 90H 105H 40G
20B 42B 42B 95B 110B 42B
20C 42C 42C 95C 110C 42C
20D 42D 42D 95D 110D 42D
20DD 42DD 42DD 95E 110E 42DD
20E 42DDD 42E 95F 110F 42E
20F 42F 42F 95G 110G 42F
20G 42G 42G 95H 110H 42G
22B 44B 44B 100B 115B 44B
22C 44C 44C 100C 115C 44C
22D 44D 44D 100D 115D 44D
22DD 44DD 44DD 100E 115E 44DD
22E 44DDD 44E 100F 115F 44E
22F 44F 44F 100G 115G 44F
22G 44G 44G 100H 115H 44G