Rihanna on Fenty, Instagram trends and what’s cute in guys

Rihanna does not simply enter a room; she makes an entrance. And on Friday afternoon at the Bloomingdale’s flagship store in New York City, she was escorted inside by an exuberant high school marching band decked out in Fenty University gear, which brilliantly abbreviates to “F.U.” The occasion was a “pep rally” for …