A model is sometimes on her feet all day. She must be healthy and in shape to be able to work all day and still look good. High Fashion Claudia Schiffer, Kate Moss, etc. The most glamorous jobs are reserved for them, including the collections. They have strong and distinctive features.
Exotic looks are popular.
Children and teens can find work in many different types of modeling including fashion shows and commercials. Teen models are generally called Junior models. This refers to photography for magazines, including covers. This work is very eagerly sought after by models because of the exposure it provides. Requirements are flexible.