Here are the established etiquette rules.

For single-breasted and double-buttoned suit buttons, the standard buttoning method is to fasten the top button or leave it unbuttoned; fully buttoning and only buttoning the second button are illegal.

Only buttoning the top one is solemn, not buttoning it is chic and harmonious; but only buttoning the bottom one is arrogant and disrespectful; buttoning both buttons is rustic.

In addition, there are other buckling requirements for button styles:

Single-breasted and one-button suits---can be fastened or left open.

Single-breasted, three-button suit - no buttons or only one button in the middle, that is, one or three buttons are left unbuttoned.

Double-breasted suit-----all buttons should be buttoned. You can also only buckle the top one, but you can't not buckle it. Dress buttons should be unbuttoned when seated and buttoned as they are when standing up.

Extended information:

Wearing a suit cannot be casual, there are many things to pay attention to.

When wearing an inner shirt, it is required that the hem of the shirt should be put into the trousers, and the shirt collar should be about 2cm higher than the outer collar. This is the most basic etiquette and can also protect the outer suit jacket. .

When wearing a vest, pay attention to the length of the front body of the vest to cover the waistband and prevent the waistband from leaking out.

The combination of a black shirt, a light-colored suit, and a light-colored tie is very informal. This color combination is usually used for casual wear.

Tie is an important part of suit etiquette. Using different ties can bring a dramatic change to the same suit. Someone once said: "The tie is the soul of the suit."

There are many types of ties, which can be roughly divided into two types: normal ties and modified ties. . Normal ties include slip-knot ties, square ties, bow ties, etc.; variant ties include Asqua ties, Western ties, wire loop ties, etc.

The tie tying method is also very particular. Usually, after buttoning the shirt collar, put the tie outside the collar, then press the wide piece under the collar corner, pull the other end, and tie the tie. It is naturally sandwiched in the center of the collar without having to turn the collar up.

The most important part of tying a tie is the bow tie. Various tying methods can produce bow ties of different sizes and shapes. Everyone can choose their favorite tie-tying method based on the angle of the shirt collar. Generally, if the collar angle is smaller, it is better to tie it with a slim knot, while if the collar angle is larger, it is better to tie it with a larger tie.

But no matter which tying method is used, after the tie is tied, both ends should hang down naturally. The wider piece at the top must be slightly longer than the narrow piece at the bottom, and it must not be the other way around. Of course, the top piece should not be too long. Too much will cause the belt tip to press against the waistband or even hang below the waistband, which is unsightly.

If it matches a suit and vest, the tie must be placed inside the vest, and the tip of the tie must not be exposed outside the vest. The width of the tie should not be too narrow, as it will look stingy. The width should be in harmony with the shape of the person's face and the width of the suit collar and shirt collar.

Reference materials:

Baidu Encyclopedia_Suits