There's a choice of 14/16 or 16/18
I'm normally a 14 on top for t-shirts, jumpers, etc. Though I tend to buy a size 16 for coats, especially winter coats so I can get a jumper under them. I'm definetly a size 16 on my bottom half and as the jacket will come half way down my (big) bum I probably need to take that into account.
So I'm thinking maybe I need the bigger size but am worried I'll look like the Michillin man in it. Does anyone know if their sizing comes up big or small?