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. / k& n' m6 \6 t5 }晚上的Semi-Formal 4 z, M V- U1 u+ ?& E X8 _( N6 V女士:小礼服, 长礼服不必 , M( U1 ^' V0 p g! y男士:深色西装, 领结,燕尾服不必。