To add to this, they might have high self-esteem and comfort while wearing their approved style (which might not appear "sexy" to others) out and that might translate to feeling sexy at home.

I don't think I've ever left home feeling "sexy". When I dress nicely and get the sideways glance and smirk from hubby then I'm desirable and know what's happening when we get home, but I dress modestly. One can highlight her assets while covering them after all.