Most Helpful Girl
Perhaps because you can differentiate between something that is real, and something that isn't.
A lot of models don't look the way they do in real life.
A lot of models are photoshopped, hair extensions, made up.
It's very rare that even they look the way they are displayed on magazine covers.
Perhaps you know that these people look "hot" and "fantastic" in their own skin.
And you know that the images displayed aren't real ones.
Which is why you don't consider those people hot.