Because the aesthetic mainstream of each era is different, the previous wear is not mainstream now, and by the same token, the present wear is not mainstream ten years later. Only a few classic clothes have been circulating, so as long as they are not classic clothes, they will be non-mainstream clothes in a few years. Nowadays, many people find it strange to look at the photos taken before. I really want to destroy my previous photos, because it feels like my own black history. What I was wearing is really a little spicy now. Therefore, many people will think that their previous wear is very non-mainstream, but this is actually a very normal phenomenon. I don't think this phenomenon is unique, but most people think it is very non-mainstream when they look at their previous clothes. This shows that this is a common phenomenon, and the aesthetic mainstream of the times is different. Aesthetics is not static. With the changes of the times, everyone's cognition of beauty will also change. So looking at the old clothes now will feel particularly non-mainstream. By the same token, if the present dress is not a classic dress, we will look back at the present dress ten years later and feel that we are not mainstream. Because the aesthetics at that time was probably different from now. This is actually a very normal phenomenon, which also shows that our aesthetics are getting higher and higher. Personally, the improvement of aesthetics is mainly reflected in the denial of the past by the present aesthetics. If you always feel that you are the mainstream aesthetics, on the other hand, it also reflects the retrogression of aesthetics. Because aesthetics can't stay the same all the time. Therefore, based on the above reasons, we now think that the previous dressing is non-mainstream because our aesthetic ability has improved and our cognition of beauty is constantly improving. Similarly, after looking at the present dress, I will feel that my dress is very unconventional.