Which girl celeb could be the devil in disguise?

@ScrewThisImDone Boom goes the dynamite!😂 I can't STAND/TRUST goody 2-shoes like her. They're nice when the cameras R rolling, but a total bitch/asshole when they're off. I think her dating/relationship "success" proves that!🤣

Every clip I've seen her in, especially of her music videos, makes it pretty clear her whole "girl next door" thing is just an act. Seriously, if her ego were any more obvious...