新娘服，又称嫁衣，是指婚礼时新娘所穿的服装。不同文化中有不同的新娘服，如华人的传统新娘服有圆领配马面裙（配凤冠霞帔）、龙凤裙褂，日本传统新娘服有白无垢（配绵帽子）、色打挂（配角隐），朝鲜族传统新娘服有阔衣、圆衫、唐衣等。南亚新娘服为结婚莎丽。西式新娘服则是婚纱。但实际上不是所有女性都会在结婚时穿着专门的婚服，尤其是因为婚服一般所费不菲，旧时租赁婚服尚未普及时，一些人只是穿一些比平日华丽、正式的服装结婚，这些服装实除上也属于婚服，但亦可用于其他重要场合。

A wedding dress or wedding gown is the clothing worn by a bride during a wedding ceremony. Color, style and ceremonial importance of the gown can depend on the religion and culture of the wedding participants. In Western cultures, brides often choose a white wedding dress, which was made popular by Queen Victoria in the 19th century. In eastern cultures, brides often choose red to symbolize auspiciousness.