Top principle is one of the basic principles of dress etiquette. "tpo" principle, that is, dress should consider time, place and occasion. Among them, the letters T, P and O are abbreviations of English words: time, place and occasion.

It means that when people choose clothes and consider their specific styles, they should first consider the time, place and occasion, and strive to make their clothes and their specific styles coordinate with the time, place and occasion, so as to be more harmonious and compatible.

Location of the highest principle:

In terms of location, whether staying indoors or outdoors, staying in urban areas or rural areas, staying at home or abroad, staying at work or at home, the styles of dress in these different places should be different, and they must be different.

For example, it is common for people to wear swimsuits on beaches and bathing beaches; But if you wear it to work and go shopping, it will make people feel uncomfortable. At home, young girls can wear small vests and miniskirts whenever they want, but it seems a little disrespectful to the locals if they appear in conservative Arab countries in this way.