What is an "Hourglass Figure"?

It's no secret that I'm a great lover of hourglass figures. I can't think of anything more beautiful or sexier. As you might imagine, this preference strongly influences what models and actresses I find to be the most attractive, such as Jennifer Lopez, Vida Guerra, and Salma Hayek.

For those who are not easily offended and wish a visual reference, click here to see a nude side-by-side comparison.