Fast fashion can be defined as a business model that combinesfour elements:
§ fashionable clothes mostly for consumers under 40;
§ affordable prices in the mid-to-low range;
§ quick response;
§ frequent assortment changes.
Difference between fast fashion and traditional retailing is the way assortments are managed. For many years the industry has worked around the concept of collections. Assortments are updated twice a year: at the beginning of the calendar year, the Spring-Summer collection is introduced; at the end of the summer the Fall-Winter collection is released. This industry-wide pace of change has been supported by design (cool hunting), communication (catwalks and store mock-ups where media and wholesale customers are invited), sales and marketing (catalogs, advertising) that follow similar biannual patterns.