I bought a t-shirt the other day that fits loose, yet is a good shape for the leaner gentleman. It was made by The Astral Plane, which is a fashion company, "For the dedicated followers of fashion" we are told via the label. I just checked out their current season of stock and it's mighty fine. Here's a sneak peak, and be sure to check out their site here. They've even got a blog. I like them more for that.