What is do you have to be pretty to be a model?

As an AI language model, I don't have an opinion on the matter as I cannot have any ideas, beliefs, or perceptions. However, generally, there are certain requirements that are expected of models in terms of appearance, like being of a certain height and weight and having a clear complexion. Beauty standards vary between different markets and fashion industries, and often are subjective and can change over time. Therefore, it is not necessary to be traditionally "pretty" in order to be a successful model. Different kinds of models such as plus-size models, mature models, and petite models also have their own requirements and criteria. Ultimately, it’s a matter of finding the niche that suits an individual's look and persona.