The great thing about using the past is that it gives you the most colossal freedom to invent. The research is necessary, of course, but no one writes a novel to dramatically illustrate what everybody already knows.
Because I was the first super-elite, the press caught on and started calling me a supermodel. So in that sense, I guess I'm the first. But, in my opinion, there were girls that could have been called supermodels before that, if the term was in existence.