I ordered several shirts from them some years back, so it is possible that their cut(s)have changed. However, they cut a full shirt. I am not slim and they are full for me.I suggest you email them for the exact measurements of their regular vs. slim fit-that is if it cannot be found on their website. Harvie and Hudson are very customer orientedand will respond in a day or two. BTW, very decent shirts for the price.