What is Business Cocktail Dress code? dress codes are a minefield but it's all about feeling yourself and looking appropriate for the surroundings. It's especially tricky when you have to traverse Wedding Guest Suit and Tuxedo Rentals Guide to Cocktail Attire for Women 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,