At last count, the New York Times had 11.8 million Twitter followers. LeBron James had slightly more, 12.8 million. CNN also nudged him out with 12.8 million. But 20-year-old Ariana Grande beat them all with 15.2 million and counting. In terms of Twitter reach, this makes her the 41st most powerful person in the world, not far behind the trifecta of Katy Perry, Justin Bieber, and Barack Obama. Never heard of Grande? You must be over 18. The cutie from Boca Raton is a triple threat, acting on the Nickelodeon show Sam & Cat and dancing and singing in a music career that is managed by Bieber puppetmaster Scooter Braun. Grande's first album of high-pitched radio pop and carefully curated collaborations (one with rapper Mac Miller) debuted at number one on the Billboard charts last fall. She's still in closely managed, rising-star mode, but surely it won't be long before she shaves her head and kisses Madonna. Then she'll truly have made it.