Something casual to go with jeans, summer trousers, skirts etc. Needs to be fitted and comfortable. Probably will be a size 18 (16 on top but all the jackets i've tried on i need bigger 18 or even 20!!). Anyone recommend anything. Am quite plump (being generous to myself!!!!!) and size 16/18 depending on shop. Broad shoulders and a tummy and biggish norks!! Any help?