Okay, I haven’t seen anything similar to this anywhere in this thread, so I’m feeling even odder than I did when I came in.
A prominent chin.
Particularly when combined with a sharply angled jawline.
I haven’t made a real clinical study of this, and would be hard-pressed to pick out celebrity examples without a picture in front of me, but when thinking over various women I’ve known or seen in passing whom I found particularly attractive, I’ve noticed that the above chin/jawline is a common factor.
It seems especially weird to me, not only because it’s not a trait often mentioned in discussions of the subject, but because it operates subtly, such that I’m often not specifically conscious of it.
There are rounder-faced women that I find attractive, but not in quite so… personal a way.