Well, on paper, you must be at least 5 foot 8 and even then, in the modelling industry they call that short. If you're taller than that, you're much more likely to receive more bookings. Also, it...
a model who is successful in all four fashion capitals in the world:-)
Supermodels are genrally thin stick like figures that show off clothes.
It's a model that is sought after by different ad companies or the fashion industry. In other words extremely popular.
Usually, supermodels are very tall, scary thin, pale, and pretty.