Age limit is one more factor that goes in the favor of female models. Females can start the modeling work just after their puberty period as they develop erotic look in that age. And if a female model can maintain herself properly then she can look sexy and attractive till her late 30s. That means she will ha more lifetime to stay in lime light, she will have more contact as well and she will get more career opportunities as well instead of a male model. Since female models start their career early and they can extend it till their late age, so they would have plenty of opportunities to do different kind of modeling in their long career.