I do not believe there should be a minimum weight limit for models. Though the issue of body image, especially in young girls, is an important and troubling one, we cannot regulate our way to good self esteem. It is the jobs of parents to instill the foundation for healthy self-image in young people, and the job of adults to maintain their own. If we as a society want to see larger models, then we need to vote with our dollars. Designers use thin models because they sell clothing: if we stop buying the clothing that hangs off of wraith-like shoulders, they will use larger models.