Where Ariana Grande goes, her power ponytail follows. And though it's obscured by an enormous Eric Javits hat on the cover of Vogue's August issue, it's out in full force in the accompanying Annie Leibovitz spread. Not to mention, whipping—and floating—around in her new "In My Head" cover video. Yes, the 26-year-old pop superstar's signature updo is synonymous with her persona. But, just like her four-octave vocal range, it’s far from one note.