Quote Originally Posted by Jock Scot View Post
It is not usual to wear evening(dress) wear to a wedding. It is quite normal to wear the morning suit which is the usual formal(dress) day wear(four in hand tie or cravat is worn) attire for a wedding. Whilst the coat for evening wear "white tie" does indeed have tails it should not be confused with the appropriate day dress wedding attire, the morning suit, which also has tails. The "cut" of the jackets with the tails are completely different. Be careful, a potential major faux pas is lurking!
Good advice for Scotland, but remember, the OP lives in the U.S. In many parts of this country, weddings are more likely to be held in the evening, than during the day.