I am watching her right now actually. I recall seeing pictures of her, with the media portraying her as some kind of before and after commercial. She did lose alot of weight. I think that she is so conscious of her health and weight due to the fact that she hosts high profile competitions such as Modelville and America's next Top Model, and is somewhat in the spotlight still, even though she has officially retired from her modelling career.
Is she seeing anyone yet? Looks like she doesn't want to evolve into the typical role of marriage and having at least one baby.
Tale of Two Tyras: Ex-Model Explains Split TV Persona
By night, Banks reigns supreme on "America's Next Top Model," a reality show on which contestants are judged by how they dress and the way they look -- just the criteria that "The Tyra Show" attacks as hollow and, at worst, oppressive to women. Ref. Source 8