-or a piece of string? Yes, I know, a very non-precise question, but this is me:
5'6", 13 stone and size 18, just. Or more to the point, right now I am finding I pick up the 18 and the 16 to try on and always err towards the 18 as I like looser clothes even though I bet Trinny and Suzannah would insist on the 16!