Bra Sizing Guide

Finding the perfect fitting bra for you at brasnthings.com is a piece of cake

All you need to do is find the band and cup size that ‘fits’ your body size. Naturally then, 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). Now we’ll take you through it step by step.

Step 1 Body Size

First step is to determine your body size. To do this, obtain your ‘under bust’ figure and use this figure to find your corresponding body size, based on the table below. For example, if your ‘under bust’ is 75 cm, you will fall within the 72-77 cm ‘under bust’ range in the table below. Therefore, your corresponding body size will be a size 12.

Note: Make sure you take your measurements whilst wearing a suitable bra, and with no outer garments. If you haven’t measured your bra size yet, please go to our how to measure bra size guide for tips on how to measure correctly.  If you are in between sizes, we suggest you opt for the larger size.

Body Size8101214161820222426
Under Bust62 - 6767 - 7272 - 7777 - 8282 - 8787 - 9292 - 9797 - 102103 - 107108 - 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

Step 2 Cup Size

Second step is to determine your cup size. To do this, obtain your ‘bust' figure by placing the tape around the fullest part of your bust. Then use this figure, coupled with your body size, to determine your cup size - based on the table below. For example, if your ‘bust' is 96 cm, and your body size is 12, you will fall within the 95-97 cm ‘bust' range, for size 12, in the table below. Therefore, your corresponding cup size will be Cup DD.


Body Size8101214161820222426
Under Bust62 - 6767 - 7272 - 7777 - 8282 - 8787 - 9292 - 9797 - 102103 - 107108 - 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

Step 3 Bra Size

Third step is to select your bra size. Your bra size is simply the combination of your body size and cup size. Therefore, if your body size is 12 and your cup size is Cup DD, your bra size is 12 DD! Perfect.

Body Size8101214161820222426
Under Bust62 - 6767 - 7272 - 7777 - 8282 - 8787 - 9292 - 9797 - 102103 - 107108 - 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  95-97  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

 

View our guide to finding the perfect fit!: