Black Tie Optional Wedding Guide What to Wear + What it Means Can I do ankle length at a formal wedding instead of floor length? : r Weddingattireapproval 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 # what to wear to a black tie wedding attire dresses formal floor length