The dress codes in formal occasion is White tie and Black tie in some western country.Below will talk about them.
White tie
The required clothing for men is roughly the following: a tailcoat,formal trousers, uncuffed, with stripes on leg seams.White bow tie,white vest ,white front or plain stiff-fronted shirt with a detachable wing collar.Cuff links and shirt studs.Black patent leather court shoe, or any other accessories.
Women wear a variety of dresses. See ball gowns, evening dresses, and wedding dresses. Business attire for women had a developmental history of its own and generally looks different than formal dress for social occasions.
wedding dresses
Evening Dresses
Black tie
Black tie briefly, as men wear a dinner jacket,for example trousers, uncuffed, and with one stripe on leg seams,shirt with either a placketed, pleated, or ruffled front; a black bow tie; a black evening waistcoat or a cummerbund; black, patent leather or calf Oxfords or court shoes; cuff links and shirt studs; accessories.
Mens clothes in formal occation not only express their personal taste and temperament, but also display dignity and respect for another people and themselves.Men should pay more attention in special occasion dresses .