Katy Perry's life-affirming single "Roar" has inspired kids around the globe, but maybe none as much as five-year-old cancer patient Addy. The Make-A-Wish Foundation helped make her dreams of becoming a pop star come true by filming a music video for the song, Addy playing the role of Perry.

In the clip, Addy embodies Perry down to the last wig and international smile. Watch her perform at a talent show, greet fans, ride in a limo and get interviewed on television in the heartwarming clip. She does great!