The basic design of the shirt remains unchanged and is unlikely to change in the future. Changes are mostly peripheral. Shirts can be classified in many ways.
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Men's shirts are traditionally classified as formal and casual. As the name suggests, formals are intended for official events, e.g. going to work, visiting official events, and visiting other places where dignity and good looks must be preserved.
The formal ones usually have a dark color or subtle light color. The design is not luxurious and is usually done in one color. In the case of a checkered shirt, a line is made with other suitable colors.
Casual shirts show fun and games. You can have a lively and luxurious design. Bright colors and pleasing patterns attract attention. There are no rules set for daily design. The designer can be as creative as possible. This can be weird, funny, or iconoclastic.
Almost all types of shirts can be included in both formal and casual categories. The third category of men's shirts is T-shirts. T-shirts are usually included in the category of casual clothing. However, various types of t-shirts are available.
In the traditional sense, a T-shirt can be defined as a shirt without collar and without buttons. At present, however, there are t-shirts with collars and buttons on the market. T-shirts have a very large market. To meet the requirements of new types of T-shirts, designers have adopted much novelty such as buttons and collars.