A model is a person with a role either to promote, display or advertise commercial products (notably fashion clothing in fashion shows), or to serve as a visual aid for people who are creating works of art or to pose for photography.Modelling ("modeling" in American English) is considered to be different from other types of public performance, such as acting or dancing. Although the difference between modelling and performing is not always clear, appearing in a film or a play is not generally considered to be "modelling".Types of modelling include: fashion, glamour, fitness, bikini, fine art, body-part, promotional, and commercial print models. Models are featured in a variety of media formats including: books, magazines, films, newspapers, internet and television. Fashion models are sometimes featured in films (Prêt-à-Porter and Looker); reality TV shows (America's Next Top Model and The Janice Dickinson Modeling Agency); and music videos ("Freedom! '90", "Wicked Game", "Daughters" and "Blurred Lines").Celebrities, including actors, singers, sports personalities and reality TV stars, frequently participate in modelling contests, assignments as well as contracts in addition to their regular work.Modelling as a profession was first established in 1853 by Charles Frederick Worth, the "father of haute couture", when he asked his wife, Marie Vernet Worth, to model the clothes he designed.The term "house model" was coined to describe this type of work. Eventually, this became common practice for Parisian fashion houses. There were no standard physical measurement requirements for a model, and most designers would use women of varying sizes to demonstrate variety in their designs.With the development of fashion photography, the modelling profession expanded to photo modelling. Models remained fairly anonymous, and relatively poorly paid, until the late 1940s, when the world's first three supermodels, Barbara Goalen, Bettina Graziani and Lisa Fonssagrives began commanding very large sums. During the 1940s and 1950s, Graziani was the most photographed woman in France and the undisputed queen of couture, while Fonssagrives appeared on over 200 Vogue covers; her name recognition led to the importance of Vogue in shaping the careers of fashion models. One of the most popular models during the 1940s was Jinx Falkenburg who was paid $25 per hour, a large sum at the time; [3] through the 1950s, Wilhelmina Cooper, Jean Patchett, Dovima, Dorian Leigh, Suzy Parker, Evelyn Tripp, and Carmen Dell'Orefice also dominated fashion.[4] Dorothea Church was among the first black models in the industry to gain recognition in Paris. However, these models were unknown outside the fashion community. Wilhelmina Cooper's measurements were 38"-24"-36" whereas Chanel Iman's measurements are 32"-23"-33".[5] In 1946, Ford Models was established by Eileen and Gerard Ford in New York; it is one of the oldest model agencies in the world.