When you think of the three-piece suit, you think of the Thomas Crown Affair, or Al Pacino in The Godfather Part II, looking as fierce as any actor ever. You think of high-powered attorneys and CEOs roaming the courtrooms and boardrooms of the 1970s. You think of Justin Timberlake onstage. The question is: Do you ever think of yourself in one? You might want to start. The three-piece suit no longer suggests you have the corner office (or a tommy gun); it suggests you have style. Of course, it’s not as easy as one two three. You need to know how to wear it and where to wear it. And their lies the beauty: a dismissal of the waistcoat and you have a two-piece, lose the trousers and you have a weekend jacket. All three put together and you have a razor sharp suit. It even has other uses as recently reported by the New York Times. Whatever your use for a three-piece, every well dressed gentleman should have one.

