Pair your black-tie suit with a classic white dress shirt and a black bow tie to complete the timeless look. Opt for a well-tailored suit made from high-quality fabric to ensure a sharp and polished look. The classic black-and-white combination exudes elegance, style, and sophistication. The best option would be a black-tie suit.Ī black-tie suit is the perfect choice for any formal event, and a Casino Royale-themed party is no different. Luckily, it’s not rocket science! The dress code for a Casino Royale-themed party is all about sophistication and elegance. Black-tie suit Source: If you are invited to a Casino Royale-themed party, then the first thing that would come to your mind would be what to wear.