Do We Have This One?? Oh and I'm open to title suggestions. A subtrope of Evil is Sexy, this is for a villainess (or female Anti-Hero... or maybe, in Dark Is Not Evil contexts, even a more unambiguously heroic character) who, well, looks like a dominatrix. This particular way of making evil sexy borrows from BDSM themes to indicate how "dominant" she is, and so will tend not to be applied to the Harmless Villain, except maybe ironically.
Hello, Unknown Troper. You'll need to get known to lend a hand here.