The Best Black Tie Dresses (that Won't Break the Bank!) Do you *actually* want Black Tie? Or do you just mean formal? Definition of black tie: Black tie is a formal dress code for evening events, requiring high level, sophisticated attire. For men, Black Tie Wedding Guest Dresses & Black Tie Optional Looks Mesh A Line Dress in Black Floral The Black Tie Affair Black Floral Short Dress with Ruched Side Short Dresses Saved by the Dress