Kindest way to say "fat."
Katie is a plus-size model because she's fat but would be attractive if she wasn't.
A full figured female or male who is just as attractive as a super model but can serve as an example for the full figured people.
Queen Latifa is a plus size model who does adds for cover girl.
A model who is larger than is currently popular, and who may in some cases have health problems related to being overweight, rather than health problems related to being underweight.
The designer used a plus-size model in his fashion show, but her size 20 is just as unhealthy as a size 0 is for most women.