Young people always want to differ from their parents
Desire to differ.
If we look at young people we will see a lot of differences between them and their parents. Previous generation doesn't like modern music, doesn't understand modern trends, doesn't play teenager's games. But the easiest difference to be caught is an appearence. Young people always want to dress in another way. Why?
Since the time children were born parents have always been telling them what to do. Thus there are acceptable situations when young people try to do something which their parents dont like. The easiest way is to change the appearance. The one who does it becomes a kind of a rebel for his mates and they try to repeat his achievement.
On the other hand, not only rebels prefer different type of a dress style. While children are growing they get their own understanding what is pretty and what is not. So they start using the gained sense everywhere and particularly in clothing.
And last but not least... Everything changes in our World. So why do we think that fashion cannot do it?