Why do groomsmen wear bow ties instead of ties?

Because the groomsmen you see wearing bow ties are not wearing a suit, but a white tie or black tie. Also known as morning dresses with neckerchiefs, white tie dresses and black tie dresses are the highest and second highest level of wear in the men's dress code, higher than suits, and the equivalent of women's evening dresses, they are men's evening dresses. Suitable for attending extremely grand occasions and more grand occasions, there are clear requirements for wearing details. One of the items that can be found on your own is that you must wear a white and black bow tie. This kind is only suitable for evening weddings or wedding banquets.