What Length Should a Formal Dress Be for a Black Tie Event? Azazie Blog three criteria for black tie, and spoiler alert, color is not one of them! (unless of course you're going to a wedding in which case, avoid white obviously) #dresscode #weddingguest #weddingguestdress #blacktiedress # 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 What to Wear to a Black Tie Wedding: Formal Wedding Attire