Just curious - Who here wears V-necks v. crew necks (or vice versa) and why? Some other "style" source I read said that in wearing a dress shirt, your undershirt should never be exposed. So I'm thinking the V-neck is useful in business casual contexts (sans tie) where one leaves the top two buttons unbottoned, and because of the V of the undershirt, it wouldn't normally be exposed, showing the manly top of your chest (hair or not). If you have to wear a tie, it follows that it really doesn't matter what undershirt you wear. Does anyone here think it is inappropriate/tacky to wear a crew neck under a dress shirt, exposing it slightly in a business casual setting? Does anyone think that with a thin dress shirt, seeing the outline of a V-neck undershirt is also tacky?