Yeah I think its about a stone or so per dress size. Im 5ft 8". Ive lost 8 stone and about 5 dress sizes, but in all honesty its more than that as I had outgrown even size 32's, I was having to wear elasticated baggy stuff. I think I was probably about a 36. Im about a 22 now, so about 7 dress sizes at 8 stone loss.