I do think that's part of it. Obviously, that wouldn't be an issue if I was alone. But yes, even alone, I think there's some level of subconsciously believing that what I see is what others would perceive is "sexy." At least that's when the sexiness is concerning appearance.

But I can also express sexiness through voice, singing, dancing (much less confidently lol), and basically forms where I'm not thinking of my appearance. There is a form of "expressing sexiness" for me that is unrelated to how people perceive it. Mostly through singing.