Princess Charlotte sings along with Katy Perry at coronation concert
Perry took the stage in front of 20,000 people on Sunday, rocking a metallic gold Vivienne Westwood dress and belting out rousing renditions of hits "Roar" and "Firework."
Perry took the stage in front of 20,000 people on Sunday, rocking a metallic gold Vivienne Westwood dress and belting out rousing renditions of hits "Roar" and "Firework."