I'm an 8 - pretty much everywhere. But I'm not 5' tall! I'm 6' tall (30cm difference for you crazy metric people). So it fits my shape perfectly BUT I show 8" of stomach and my trousers are at half-mast! I hate having to search and search and search for "tall" or "extra long" - I'm not that freaky! But oh no, tall people have to be size 16 to get clothes. Size 8? That's not happening.

So it's not just clothes sizing, it's the assumption we're all the same height that gets me.