Two easy steps to finding your right bra size:

Ribcage Measurement Table




58.5 - 62.5 23 - 24.5 28
63.5 - 67.5 25 - 26.5 30
68.5 - 72.5 27 - 28.5 32
73.5 - 77.5 29 - 30.5 34
78.5 - 82.5 31 - 32.5 36
83.5 - 87.5 33 - 34.5 38
88.5 - 92.5 35 - 36.5 40
93.5 - 97.5 37 - 38.5 42
98.5 - 102.5 39 - 40.5 44

1. Find Your Band Size

This is the ribcage measurement and not the size of the cup – it is always referred to in numbers eg, 32, 34, or 36 etc.

  • Place a tape measure around your body just under your bust
  • Ensure the tape is level front and back – use a mirror or ask a friend to help you
  • Pull the tape tightly around your body – remember, the bra will stretch when worn but the tape will not!
  • Use the table below to calculate what back size you are. For example – underband measurement on the tape measure is 32 inches = bra band size 36 – if you fall between inch sizing always go down.

Cup size measurement table

Ribcage measurement minus bust measurement

Cup Size

3 inches AA
4 inches A
5 inches B
6 inches C
7 inches D
8 inches DD
9 inches E
10 inches F

2.Find your cup size

  • This time place the tape measure around your body at the fullest part of your bust. (You can do this with your bra on).
  • Deduct your rib cage measurement from your bust measurement and use the chart below to find your cup size. For example, if your rib cage measurement is 38 inches and your bust measurement is 42 inches, i.e a difference of 4 inches, your cup size will be ‘A’.

Points to remember:

  • Once you have found your size, use this as a starting point only as different styles and brands will often fit differently.
  • The same cup size will not be the same on different band sizes eg the cup size of a 32D is not the same as a cup size on a 36D.
  • Always try on a bra on the first hook and eye as the bra will give with washing and wearing. When that happens you can put it onto the next hook and eye for the correct fit.

How to put on a bra

Step 1

Lean in. Adjust the straps to their maximum length (you’ll shorten them later) and slip your arms through. Lean forward into the cups, hook up the bra at the back if you can (if not, fasten the bra at the front and then turn it around, taking care not to strain the elastics, before leaning in) and put the straps on your shoulders.

Step 2

Adjust the bra. To do this slip a hand into the cup and lift the breast while holding the wire in the correct position with the other hand. Where should it sit? Look at the natural crease of the breast – the wire should fit along the crease where your breast begins while remaining on the ribcage so that it doesn’t pinch the breast tissue.

Step 3

The Jiggle: Hold the wires under the breasts, lean forward and gently shake the bra to the left and right. Your breasts will fall into the cup and sit higher when you stand up straight.

Step 3

Remember that it’s the bra band that provides most of a bra’s support – not the straps. The straps should therefore support the breast lightly without putting too much pressure on the shoulders. Drop the strap off your shoulder so that you can reach the adjusters from the side. You only need to do this once, and the strap length will be right every time.

Caring for your bra

The bra is intricately constructed to support and often uses delicate or specialist fabrics. Taking care of your bra will ensure it keeps its shape and structure longer.

Can I machine wash my bra?

Manufacturers normally recommend that you hand wash a bra as a machine can cause damage. We’d advise that you follow the manufacturer’s care instructions to avoid:

  • the underwire coming loose and damaging your machine
  • the foam moulding of a t-shirt bra becoming crumpled
  • the fastening damaging stitching or delicates
  • If you do use a washing machine, we recommend using a laundry bag and setting a delicate, low temperature cycle.

Can my bra be tumble dried?

No, even on a low heat setting this would damage any elastane in the fabric. Any padding would be likely to wrinkle or shrink..

Any tips for hand washing my bra?

Use cold water and a detergent designed for delicates. Drip dry, do not wring out. Delicate and synthetic fabrics tend to dry quite quickly.

Maternity and nursing bras

Women are often told to buy their maternity bras in the fourth month of pregnancy; instead, we recommend listening to your body and doing what is most comfortable for you. For example, your breasts might start to feel swollen well before the fourth month, so do be prepared to invest in a few new maternity bras to accommodate your changing shape as your pregnancy progresses. Generally, though, a maternity bra should fit you on the tightest hook when you buy it – you can loosen it, or even buy bra extenders – as you grow.