what is semi- formal?
By Claire McAdams. Semiformal attire is a happy medium between formal wear and casual wear. Sometimes also referred to as âcocktail attireâ or âbusiness attire,â the semiformal look is dressy without dressing to the nines. When in doubt, consider the advice of Chanel creative director Karl Lagerfield â âOne is never overdressed or underdressed with a little black dress.â.