Taking a pornographic movie and putting someone's face in place of one of the actor's does not violate their privacy in any way, since nothing private was shared that wasn't private before (their face).
> What if I look identical to Taylor Swift? Do I lose my right to free expression?
Taylor Swift's corporate legal team would already do a pretty fine job of excising that right from you. No additional legislation needed.
Yes.
> What if I look identical to Taylor Swift?
Yes, still.
Now, if you are trading commercially on the appearance similarity in a way which presents, either explicitly or implicitly on your images as Swift’s, then you open yourself up to right of publicity claims in some jurisdictions, and the same may be true of revenge porn laws in some jurisdiction, even without the context being commercial.