Nope, they surely don't. I like a lot of the more casual offerings, but even the small sizes are far too large on me.
This is a surprise; I haven't bought anything from them in some time, but their 36S (Samuelsohn made) used to fit me quite well (I have a 28 waist). It was true to size, very slim, with nice waist supression and a short jacket. I guess their target customer has gotten older and pudgier.