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. - T+ K6 u5 J5 A6 C晚上的Semi-Formal : q' M2 t( f" D# O2 v女士:小礼服, 长礼服不必 " o" Y' \. w+ W男士:深色西装, 领结,燕尾服不必。