Yes, you can. Wearing a champagne evening dress to the wedding is a very suitable choice. Champagne is an elegant and warm tone, which is very suitable for showing gorgeous and noble temperament on formal occasions. Evening dress is a formal dress, which is suitable for formal occasions in the evening, such as weddings and dinners. So if you choose to wear my nephew's champagne evening dress to the wedding, it will leave an elegant and solemn image. However, we should pay attention to the choice of clothing styles and accessories according to the specific wedding theme and occasion to ensure the coordination and perfection of the overall shape.