I found this video, of a young girls dreams to be a model, a plus size one. It has been set to some nice music, and anyone who is size 14 and up, I am sure can relate to this beautiful girl.
There are many successful plus size girls modelling out there, and there will be more as the fashion industry zooms in on the "everyday girl" and her fashions and dreams.
When I was a teen, and I went shopping for clothes with my friends, the rack never went any smaller than a size 6, now you can get size ZERO? what is that about?. Most of my friends at the time were size 12, and would do everything they could do to sqeeze into a size smaller, just so they could say they wore a size 10. They looked so uncomfortable, but they were not yet comfortable with themselves.
Eat as healthy as you can, get some exercise and fresh air, do the best you can for your body, and accept who you are.