Typically, a black tie wedding requires guests to wear either a tuxedo or an evening dress. “the lines have been blurred over the years, but it is safe to assume that black tie means. Plus, unlike most black tie dresses, this is one that can be dressed down for a slightly more casual affair. This one also comes with a really reasonable price tag for a formal. Wear this to a black tie wedding. Country weddings are typically held at a farm, vineyard, or garden and have a rustic theme. To dress for one, try keeping your outfit laidback. This dress is a bit of a wild card on every level. The midi length in skirts and dresses is still very popular, and is really easily suitable for a black tie event. While this dior design features a vertical design.