I'm 5'5, 218lbs, 38GG , and my size varies from shop to shop. I tried on a couple of dresses in Miss Selfridge the other day and I finally fit into their size 16s - which put a massive smile on my face. However I could hardly get their jeans up my thighs..when I did they were really tight and didn't do up

But I'm hoping that once I'm just under 15st that they'll fit!
Otherwise I'm generally between a 16-18, but leaning much more to the 16 side.