If it is a formal Chinese wedding, when you go to the wedding banquet, you should go to the woman's house to take a bath, take half a sentence, put on new clothes and start a new life, including dresses. You can't change them, but you can add or subtract them as appropriate, but the clothes you add must be new clothes prepared by your mother-in-law when she takes a bath. The wedding is over after the morning tea ceremony the next day. You can wear whatever you like when the wedding is over.
The core of Chinese wedding is to pay tribute to the bride. If you can't do anything else, you can be less particular. As long as the worship is completed, the woman's name can be written into the genealogy.
I don't know anything about western weddings. Of course, a casual wedding is leisure.