Ahead of the much anticipated shows upcoming in Milan, they have enforced new regulations on models weight. The models must be at least 16 years of age and with a body mass index,A mathematical formula to assess relative body weight. The measure correlates highly with body fat, of less than 18.5. This is part of a new campaign to end teens and youth girls from becoming obsessed with their weights;hopefully, resulting in a stop from the increase in teen eating disorders.