No, many brides toast in evening gowns, in all colors! How many sets should be changed at the wedding scene! But the bride needs to wear a wedding dress in the first month of marriage, that is, the red dress required by your parents, usually a custom-made cheongsam or suit. Even if it is not big red, it needs to be purple, which shows that it was just at the wedding. Since evening dresses are usually provided by the wedding hall, you need to put on your wedding dress at the end. As for customs, I suggest you don't make your parents unhappy and buy one at once! The current suit works very well and can be worn out at ordinary times.