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. 5 H u. U' w/ X& S% K: a+ C晚上的Semi-Formal ' E9 o/ L- z. z" C女士:小礼服, 长礼服不必 ) y2 t/ p' v3 L% c' F( U1 [: a# Q男士:深色西装, 领结,燕尾服不必。