Sheet Dress in Black XXL Dress code: cocktail attire. You can never go wrong with a little black dress. In this case, a midi lace black dress. Tip: If you stick to a monochromatic palette, like black, you instantly elevate OEZ Long Black Formal Dress for Women Wedding Guest CocktailDresses Evening Party Gowns Elegant Gala Prom Maxi Sleeveless Tie at Amazon Women's Clothing store Black Dresses For Casual or Formal Occasions Lulus The Perfect Little Black Dress Sassy Teacher Chic 20 Black Wedding Guest Dresses That Prove Yes, You Can Wear the Color to a Ceremony Vogue