Semiformal attire for men includes a well-fitting, dark business suit, dress shirt and tie with an optional vest. Leather shoes and matching dress socks complete a proper semiformal outfit.
Semiformal attire is almost identical to business formal attire; the only difference is business attire requires a conservative tie. Men planning to attend a social function need to consider the season and time of day in addition to the formality of the occasion.
A daytime event in the spring still necessitates a suit, but the season calls for a light color and fine material such as linen. A dark suit is more appropriate for an evening semiformal event or one held during daytime in the winter. The groom in a semiformal wedding still should wear a tuxedo to stand out from the crowd.
Although dress has become more casual over the years, there are still standards for formal, semiformal and casual functions. When an invitation calls for black tie, it means a black tuxedo, bow tie and cummerbund along with collar studs and fine cuff links. Creative black tie allows a man a chance to express himself, with a splash of color in either the tie or cummerbund. Black tie optional means a man can either wear a black tuxedo or a conservative dark suit with a dark tie.