Many "hot" women harbor a contempt for their beauty.
They are kept from living a real life and being closer to the real world simply because few people can relate to them "normally".
Beauty can be a curse because a woman rarely has anyone see her for who she truly is. Every man is interested in sleeping with her for her looks. This often leads to feelings of frustration.
Addressing this topic when speaking to her, done right, is VERY powerful.
It shows you have been around beautiful women and understand them at a core level.
It shows you won't chase them in a creepy way, or be too submissive to them just because they happen to be beautiful.
It shows you are different.