I think that it's mostly social conditioning that results in most people considering red the "sexiest" color. It pops, but I consider it mostly... aggressive? I'm not really the biggest fan of the color, at least not anymore. It used to be my favorite color when I was a kid. Funny how that changed.
Yep! That's why I put "other" in the poll.
If what you're wearing compliments your underlying skin tone (you know, the secondary one under your white or brown or black skin), then you're guaranteed to just radiate. It makes you feel better, and THAT'S when you're sexy in the eyes of other people as well, I'd say. Take it from someone who used to work in a women's fashion store.
It's not coincidence that coral is more and more becoming my favorite hue, as it compliments both mine and the skin tone of my partner. We can actually pull off matching clothes. xD
(Btw, I love your threads, @DokiDokiTsuna. Keep 'em coming lol)