So I was looking at "first bra" websites for my (very very flat) god daughter, and had this one recommended to me.
sweetling.co.uk/how-to-measure-for-a-bra/your-size
No wonder we are all in the wrong size bras...if you put in a 30 under and 34 over you get 34A as your bra size!!! I tried with those because I know you bra gurus will tell us that that should be something like 30D.
There's no hope really is there 