Semi-Formal or After Five means that tuxes are not required, nor are long dresses. An evening wedding (after 6 PM) would still dictate dark suits for him, and a cocktail dress for her. Daytime semi-formal events mean a suit for him and an appropriate short dress or dressy suit for her. , M2 E2 D, s/ e! \ e晚上的Semi-Formal 2 D" I& M/ E$ r女士:小礼服, 长礼服不必 8 ^) y! y4 C2 X% B; M6 \( L8 { J男士:深色西装, 领结,燕尾服不必。