Black Tie Attire Guide for Wedding Guests: Men's & Women's Black tie doesnt have to mean floor length, especially if youre on the shorter side. Dont be afraid of a hemline that sits below the knee it can still be completely black tie appropriate when the Not sure what to wear to a Black Tie wedding? I'm here to help! Men must wear a tuxedo. You can rent one easily and they'll help you with the requirements. Women What to wear to a black tie wedding, according to experts