The past year and a half has definitely been great for Katy Perry. From the release of her most recent album, Prism, 2 #1 singles with ‘Roar’ and ‘Dark Horse’, and a worldwide tour, the Pop-star has definitely been working hard and keeping herself in the spotlight. Joining a very small league of females to headline the half-time show, Katy Perry took to the stage and delivered live renditions of some of her most notable hits along with special guests Lenny Kravitz and Missy Elliot. Check it out!