Suslo Couture Men's Frensi Navy Button Down Comfort Slim Fit Limited Edition Collection Unique Designer Paisley Cotton 2-Button Collar & Cuffs Cut in a Slim Fit (Fitted Shirt): the Cut is Smaller than a Regular Dress shirt. We highly recommend buying 1 Size Up. Example: if you are a size L in a Non-Fitted shirt, then you should select a size XL