But is she the Devil?
One fan surely thinks so -- he's now been arrested.
According to CBS Pittsburgh, Joseph Jackson, 28, was arrested at Swift's concert in Pittsburgh on Saturday, after allegedly making online death threats to the popstar.
"Taylor Swift must parish and die," Jackson wrote in a Facebook post.
And while thousands of screaming Swifties carried "I love Taylor" signs at her concert, Jackson's sign read, "Taylor Swift is Satan."
Jackson is currently in jail and awaiting a mental evaluation.