Katy Perry is looking ... her hit single, “Roar.” She was soon joined by Lenny Kravitz, who played guitar during “Dark Horse” and “I Kissed a Girl.” Perry was also joined onstage ...

Katy Perry's Daughter Daisy, 4, Makes Her Music Debut as She Sings on Her Mom's New Song 'Wonder' The "Roar" musician then hinted that she was thinking of throwing her daughter a Hello Kitty party ...

Katy Perry will bring her ample catalog of ... As the voice behind hits such as “Firework” and “Roar,” Perry is one of the top-selling female artists in pop history. Her Aug. 3 Detroit ...