Sexy; excitingly appealing; glamorous.
Men drool over her. A vast majority of women will at least admit she's pretty. (Mostly because there aren't many women on the planet who will admit ANY woman is prettier/sexier than she is.)
She turned heads in both Transformers 1 & 2; in her low cut shirts, her daisy-duke style shorts, and long dark hair.
I am secure enough in myself to admit she's hot. And way hotter than I am. I'm not really fishing for compliments here, just being completely and totally honest.
There are a lot of pretty women in the world. There are a lot of hot women in the world as well. Most of the time you don't even have to look at Hollywood to see them. Beauty can manifest itself in many different shapes and forms.
It can be in the form of a teenage girl who has fantastic self-confidence. Or a middle aged mom of 3, out dancing for her first girl's night in years. Or a senior citizen who still has enough energy to look like a rock star and never wear the same outfit, the exact same way twice. Yes, those are all beautiful too.
So instead of looking to the media for our image of "hot", I'm going to encourage everyone to look around themselves. Find the inner beauty in everyone. When we start doing that, the world will be a much better place.