Fashion refers to the styles and customs prevalent at a given time. In its most common usage, "fashion" exemplifies the appearances of clothing, but the term encompasses more. Many fashions are popular in many cultures at any given time. Important is the idea that the course of design and fashion will change more rapidly than the culture as a whole.
The terms "fashionable" and "unfashionable" were employed to describe whether someone or something fits in with the current or even not so current, popular mode of expression. The term "fashion" is frequently used in a positive sense, as a synonym for glamour, beauty and style. In this sense, fashions are a sort of communal art, through which a culture examines its notions of beauty and goodness. The term "fashion" is also sometimes used in a negative sense, as a synonym for fads and trends, and materialism. A number of cities are recognized as global fashion centers and are recognized for their fashion weeks, where designers exhibit their new clothing collections to audiences. These cities are Paris, Milan, New York, and London. Other cities, mainly Los Angeles, Berlin, Tokyo, Rome, Miami, Hong Kong, São Paulo, Sydney, Barcelona, Amsterdam, Madrid, Montreal, Mumbai, Vienna, Auckland, Moscow, New Delhi, San Juan, Stockholm, Turin and Dubai also hold fashion weeks and are better recognized every year.