A global event, Milan Fashion Week takes place twice a year during different seasons. The catwalk shows cover the spring/summer collections in September/October of each year and the autumn/winter collections in February/March. The collections shown during the fashion shows are the new looks for the following seasons, and are obviously organised in advance to allow time for production of the designs shown and purchase by shop buyers. Fashion Week events are now very important events internationally for the launch of trends in clothing and accessories. The first city to introduce Fashion Week was New York in 1943, with the intention of promoting local brands. Milan Fashion Week followed New York in 1958, and those two cities now form part of the ‘Big Four’, namely the most important catwalk shows in the fashion world, along with London and Paris.