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The Perfect Guide to Calculating your Bra size

If you are unsure of your bra size please see below our easy tips for finding your correct size….

Step One

Finding your Underband Size

Using a Fabric tape measure, measure around your rib cage underneath the bust line whilst wearing a non-padded bra. After this please see the chart below to calculate your underband measurement.

Underband (cm) Bra Size
58 - 62  28
63 - 67  30
68 - 72   32
73 - 77   34
78 - 82   36
83 - 87   38
88 - 92   40
93 - 97   42 

Step Two

Now you need to discover your cup size.

Simply measure your bust at its fullest part using the fabric tape measure making sure that the tape measure sits evenly across the front and back and that it is not twisted.

Please see the chart below to calculate your cup size.

Bra Size Cup AA (CM) Cup A (CM) Cup B (CM) Cup C (CM) Cup D (CM) Cup DD (CM) Cup E (CM) Cup F (CM) Cup FF (CM) Cup G (CM) Cup GG (CM)
30 75-77 77-79 79-81 81-83 83-85 85-87 87-89 89-91 91-93 93-95 95-97
32 80-82 82-84 84-86 86-88 88-90 90-92 92-94 94-96 96-98 98-100 100-102
34 85-87 87-89 89-91 91-93 93-95 95-97 97-99 99-101 101-103 103-105 105-107
36 90-92 92-94 94-96 96-98 98-100 100-102 102-104 104-106 106-108 108-110 110-112
38 95-97 97-99 99-101 101-103 103-105 105-107 107-109 109-111 111-113 113-115 115-117
40 100-102 102-104 104-106 106-108 108-110 110-112 112-114 114-116 116-118 118-120 120-122

Step Three

Simply combine the two measurements to find your bra size.

 For example if you have a 74cm underband and a 93cm cup size then you are a 34D etc

 Please do not hesitate to email us at enquiries@sheerluxurylingerie.com or call us on 07831 675918 if you need any more help and we will be really happy to offer any further assistance.

If you need to exchange a bra for a different size we offer free returns.