Well, I tried and failed to understand most of the information on the Lilypa site.

I have the Basic Bra from Pin-up Girls which I toiled five times years ago using Beverly Johnson’s Crafsty course. Despite following her measuring instructions, I think I had bought the wrong size range. I now have the Marlborough by Orange Lingerie. I had my eye on that one originally but it didn’t have enough of a cup size range. It does now. I will add this to the growing list of autumn/winter projects. I still have my box of bra making bits.