Why is there a button at the bottom of the dress shirt? No buttonholes?

Spare, in case any button falls off, you can cut the spare and sew it on.

Generally, shirts and suits have spare buttons, so it is better to take them off. One is comfortable to wear, and the other is unsightly and impolite, in case it is accidentally exposed. Generally speaking, spare buttons are nailed to the tag, so you can take them off with the tag and carefully remove the lines from each seam.

As for the storage of buttons, you can find a smaller box or jar, put the spare buttons in it, and you can also mark which clothes it belongs to, so as to avoid confusion.

Extended data:

In China, buttons can be traced back to 1800 years ago. The original buttons were mainly stone buttons, wooden buttons and shell buttons, and later they were developed into buttons and knots made of cloth. From the initial functional fasteners to clothing decoration, rope buckles have played a great role in the history of our clothing development.

China button is a kind of button form of traditional clothing in China, which is sewn into thin strips from various fabrics and coiled into fancy buttons of various shapes. Chinese-style buttons are beautiful in appearance and exquisite in workmanship, just like various handicrafts, which can be said to be a wonderful flower in China clothing garden.

Chinese-style button buttons have the same use value as other buttons, and are mostly used to decorate and beautify clothes, especially in national clothes, reflecting the aesthetic feeling of their clothes. What impressed people the most was the buttons on the Tang suit.

References:

Baidu encyclopedia-shirt