Its gonna have to be case specific. -which as you said, is why it’s not so easy to make law.
If a Taylor Swift doppelganger started claiming to be Taylor Swift and making a scene, then sure the real one should be able to shut that down.
If the doppelganger started her own music career with her own name and music, then Taylor Swift can’t do shit.
If the doppelganger is somehow artificially created (computer generated or elaborate makeup/costume) than it does not have the same rights, and can be shutdown (unless its falls into the parody category, but even then it should be obviously not real).
Its gonna have to be case specific. -which as you said, is why it’s not so easy to make law.
If a Taylor Swift doppelganger started claiming to be Taylor Swift and making a scene, then sure the real one should be able to shut that down.
If the doppelganger started her own music career with her own name and music, then Taylor Swift can’t do shit.
If the doppelganger is somehow artificially created (computer generated or elaborate makeup/costume) than it does not have the same rights, and can be shutdown (unless its falls into the parody category, but even then it should be obviously not real).