Usually I have taken an L in Inis. I have one other sweater in XL that I wanted to be oversized, and it definitely is. Maybe this cardigan runs just a bit smaller than some of the other sweaters.41" chest, usually 52L coat. Got a 5 in the GRP. 54 in Valstar. If there's a particular brand you want my size in, just ask and I will tell you if I know it.Also note I have only a light henley tee on underneath the cardigan.