It depends what size you want to be I asked to be a D ( my op is Thursday) and I’m 5ft 3 about 8.5 stone. I’m a large B and I’m having between 350/400 ( deciding on the day I was 350 but they have ordered some larger ones so I think ill have 390cc if it’s ok. He said to go from a B to a D 350 would be about right ( I might measure larger than that but I want to look a D some measure at an E but only look a C if you know what I mean xx