What is morning dress? According to Wikipedia:
Men wear morning dress when members of a wedding party. In common with court dress, mess dress, and White tie, morning dress is for prestigious and important social occasions. Despite its name, morning dress may be worn to afternoon social events before five o'clock, but not to events beginning after seven o'clock in the evening; the term "morning" is best understood as "daylight".
White tie (evening dress) is the correct, equivalent formal dress for evening social events. The cutaway front of the morning tail coat differs from the evening tail coat (dress coat) in that the waist of former is cut obliquely while the waist of the latter is cut horizontally, and the tail is cut differently from the swallow tailcoat used for evening dress. The skirt waist construction of the coats is equestrian in origin, to ease the wearer's riding his horse. In the U.S., the morning coat is sometimes referred to as a cutaway coat.
Via Twifans
