Your idea of "sexy" is based on a multitude of factors of which you may or may not be aware. These are a combination of genetic, psychological, and cultural factors that make up your sexual preference. 

But regardless of (or perhaps closely considering) your sex, gender, race, age, orientation, religion, upbringing, pheromones, fetishes or whatever else may stir your pot, what do you find sexy about the people you are attracted to?

Please feel free to give as much detail or specifics as you like.