Sizing up on blazers and jackets has always been a strategy of mine, it always seems to make garments more chic in my opinion. Sizing up has its tricks tho and it might not be for everyone, but I do encourage you to try it when you go shopping next time.
This coat might be borderline too big for me but in fairness it is not mine, but my boyfriends. I have been looking for a long herringbone coat for along time but since I am quite tall, most coats tend to be short on me. My boyfriends coat is quite long so to try make up for the width, I decided to belt it and make to make it a little more synched at the waist.
BELT YOUR COATS LADIES!