Sizing

Bra Sizing

We have the band measurements for each and every bra in the individual product descriptions.

Sister Sizing

If you have purchased a bra (either from us, or elsewhere) and the size isn't quite right, it's easy to work out what's gone wrong and how to find the right size for you. Bra cups are 'cross graded' which means the same cup is used for several different sizes. If your band is too tight, but the cup fits perfectly, then you need to go up a band size and down a cup size (this will make the band 2" longer, but the cup the same as the first size).

Sister Sizing Example:

28F has the same cup as a 30E, 32DD, 34D, 36C and 38B

28FF has the same cup as a 30F, 32E, 34DD, 36D and 38C

28G has the same cup as a 30FF, 32F, 34E, 36DD and 38D

Bullet Bras

The band for our bullet bras has very limited stretch so please check your underbust measurement and compare to the sizes in the individual's product size chart.

Bullet Bra Tips

1. Lean over and coax your breasts into the cups

2. Adjust shoulder straps: this can make a huge difference!

3. Adjust breasts again using a ‘swoop and scoop’ method to ensure that your breast is comfortably filling the cup.

4. For an extra pointy shape, or if you are between sizes, add a pair of bullet bra pads.

A note of the fit of soft cup bras: with larger cup sizes in particular they might not tack (sit right on the breast bone) to your centre chest. This doesn't mean the fit is incorrect on you: the important things to consider are whether you have a smooth line (no quad-boob), are comfortable, feel supported and like the look!

International Sizing

You can find an international size conversion charge by clicking the link below.

International Size Chart
General Sizing

You can find the measurements for each and every product in the the individual product description.

Post Purchase

If you have already made your purchase and want to discuss fit, or check if something is right, we're here to help. Just fill in the form below or give us a call.

UK: 0345 430 8743
USA:  1 877 221 2472
ROW: +44 118 9767676
Office Hours: 9am to 5pm UK time, Monday to Friday.

Fitting Help

This form is sent to our main email address: mailorder@whatkatiedid.com and will be answered probably by Charlie who has years of experience in lingerie fitting both at What Katie Did and other brands.

A phone number is not required.