No, sexiness has little to do with face shape, or eye sparkle, or energy, or chi, or mouth curl, or the way she holds a cigarette. Instead, what sexiness means in the minds of men is a lot more pedestrian. When men say a woman is sexy, they mostly mean she is ATTAINABLE.
The average man looks at a hot woman, and he lusts for her, but he entertains scant possibility that he will be able to bed her. But when that man looks at a perceived sexy woman, he couples with his appreciation a genuine feeling that, given just the right ecological conditions, he could actually seduce that woman and enjoy her sex.
None of this should suggest that sexy women aren’t also good-looking women. Nerds, intelligent but mousy artist types, white knights and feminist apologists for plain janes love the “sexy” label because they value its utility as a loophole and ego massager against the unrelenting and immutable beauty standards of the sexual marketplace. Show me a man who calls an ugly woman ineffably sexy, and I will bet you that he is himself an SMV loser.
Sexy women are never the unattractive (or even marginally attractive) totems to an imaginary equalist dating market that fembots and washed up cougars wish they were. Quite the opposite. While sexy women are often not as hot as genuinely hot women, they aren’t much more than a point lower on the universal looks scale. What primarily distinguishes the sexy woman from the hot woman is that she possesses just enough in the way of physical flaws that she catapults from dreamy but distant object of beauty to alluring but attainable perfumed girl sharing a drink with you.
http://heartiste.wordpress.com/2011/09/19/hot-vs-sexy/