Modelling is a diverse industry, with a range of different jobs throughout a number of independent sectors. For example, some of the many types of models include fashion models, promotional models, glamour models, and adult models. Many of these different types of modelling can be further sub-divided, with fashion modelling including the sub fields of catwalk modelling and photographic modelling.
Promotional, or advertising modelling is one of the biggest sectors of the modelling industry, with promotional models also referred to as model hostesses (instyle-models.com) in some situations. A model hostess may work at a range of industry events, and basically refers to any modelling job where the model has to interact with the public and represent a particular product or band. A model hostess is important for the overall reputation of a brand, with the person to person experience at trade shows and special events necessary in the promotion of many commercial products.

Promotional models have many functions that they need to fulfil when they are working, including increasing product and brand awareness, providing accurate information to the public, creating an association between a brand and an idea, and having direct contact with consumers through handing out gifts and samples. In general, the marketing department of a business will choose a particular model or group of models based on the ideas that they want to convey with their market. For example, one model may convey an idea of natural beauty while another may appear more edgy and sexy. The overall effect of a model hostess is to link commercial products with particular personal ideals and representations of beauty.

A model hostess may work in a variety of different settings, including trade shows, special events, product launches, and conventions. There are a number of modelling agencies who specialise in the hiring and placement of promotional models, with many larger agencies also dealing with promotional models and hostesses as part of their larger portfolio. Model hostesses are able to find work at a number of different places and play an integral role in the advertising and promotion of various goods and services.