As we all now sizes of dresses and skirts vary from store to store - both on the high street and on the net.
To help us all - especially those of us who are computer savvy and use apps - an enterprising Guardian lady has made a comparison of sizes. Unfortunately this is just for the UK.
That sounds about the same as me with my 'D' false boobs.
I used to get medium sizes in the UK, but in China the clothes are normally smaller and I am considered an "L"
Still there is still ebay