“Fashion” is most often used as a synonym for the current style in clothing, however sociologists and other scholars who write about fashion are more likely to use a definition that says that fashion has two elements. It is (1) accepted by many people and (2) its acceptance lasts for a relatively short period of time. Fashion does not exist in all cultures and historic periods. It seems to begin in the Western Europe in the late middle ages. At that time the nobility were the originators of fashions, and the lower classes copied upper class styles (known as the “trickle down theory of fashion.”). Today, fashions may originate with all levels of society, even the least affluent, and when this happens, it is known as “percolate up” or “bottom up” fashion change.
Fonte: http://www.wwd.com/fashion-resources/fashion-dictionary/#glossary-f
Ou seja, a moda pra ser moda deve ser aceita por muitas pessoas, e essa aceitação deve durar por um curto período de tempo.
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filosofia do estilo 