In this custom, the bride must wear new clothes. It is said that married people can't take old clothes away, buy new ones, and only wear clothes they liked before after marriage. In some places, new clothes are put on the day after the wedding, and the whole body is brand-new, including everything. Others require to wear brand-new clothes, preferably red, three days after the wedding. Of course, these things depend on local customs, and everyone should follow local customs.
Here are some popular styles of Hanfu dresses, such as the combination of half-arm and pleated skirt, which is a collarless or lapel coat from Wei and Jin Dynasties. The sleeves are elbow-length, and the clothes are waist-length. Pleated skirt, the most common lower body style in Han dynasty, is made up of cloth pleats, and two ribbons are tied on the skirt head, also called chest-length skirt, which is very suitable for brides to wear in summer.
Regarding what to wear after the wedding, I think we should say hello to our relatives, so as to take care of our emotions.