Within any culture there are accepted aesthetics that inform the fine art and applied art that gets created. These aesthetics derive partly from the natural world, the climate, animal and plant life and so on; and partly from the way the society has configured itself in terms of personal interactions. All of these factors become a subtextual part of the design of clothing in that same place.
How that expresses itself in Attire language is a growing willingness on the part of regular folk to experiment with shapes, patterns and garments that they would not have considered in years past. So it becomes increasingly common to see people wearing clothing that refers to multiple cultures and times.