Wow, Justin Bieber can't seem to let things go!
Those be fighin' pics, Justin! Tread lightly!
But in all seriousness, enough.
[Image via Justin Bieber/Instagram.]
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!
Interview and Walking On Air