White tie is reserved for the most formal occasions, and it has been for centuries. It's slightly different from morning wear with a sharper jacket hem, marcella waistcoats and white ties all part of the traditional outfit.
With this suit, you'll meet every rule in this strict dress code - even if a top hat is required. The regular fit offers room for movement and lends a natural drape across the body. If the event allows, you could add colour with your bow tie.