OMG! Katy Perry in a cheerleader outfit. Somewhere in the world, Daniel Radcliffe's head just exploded!
Good Morning America brought Katy to contest winners Lakewood High School for a one-of-a-kind Prism pep rally and birthday bash!
Ch-ch-check out the video (above) to see Katy give an amazing (and athletic!) performance as she teaches these kids how to Roar!
And ch-ch-check out Katy's inspiring interview and bonus performances …AFTER THE JUMP!!!
Interview and Walking On Air
Tags: concert, daniel radcliffe, firework, good morning america, interview, katy perry, lakewood high school, music minute, performance, prism, roar, teens, tv news, video, walking on air