The size chart is off. I weigh 150 and the XL is too tight. Sleeves are also on the short side. If you want it to fit like a robe should order the next size up. Just for reference, I usually wear a men's large t-shirt. It fits nicely if I tuck it in, an XL if I want to lounge and feel comfy. This fit like the Large. No room for the tunic or anything but a really tight fitting shirt.