I'm a 12 in most shops but I tried an H&M coat on that's a size 6 and it fits but their 12-14 jeans wouldn't do up. How do they do their sizing?! I know there's not a set standard in the U.K. but I've always found their sizing so random?? AIBU to think they literally stick a number in things?? I've had it before, a size 8 skirt fits but other things in a 12-14 are too small??