CC09 1940s Bra L6036

A-D Cup?

You should select your usual bra size when shopping with What Katie Did. Our sizes are generally in line with brands including Agent Provocateur, Triumph and Gossard.

DD+ Cup?

Please note that we are not a modern full cup brand which specialises in DD+ cups which means that all of our bras are sized traditionally: your underbust measurement and band size should not be the same. Our band sizes are designed to fit an underbust measurement 3-4 inches smaller so, for example, a size 32 is designed to fit an underbust 28-29".

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).

For 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