Super Bowl 2015 halftime show: Move over Katy Perry, #leftshark causes Twitter storm
Katy Perry's Left Shark Explains His Viral Super Bowl Dance
Super Bowl 2015: Katy Perry Gets a Celebratory Post-Show Tattoo – The Hollywood Reporter
Super Bowl 2015: Katy Perry's Halftime Makeup – The Hollywood Reporter
Katy Perry's 'Left Shark' Dancer Talks Super Bowl Performance – Rolling Stone
Katy Perry blew away the Super Bowl halftime show
Next 10 Super Bowl Halftime Shows – Billboard
Super Bowl XLIX halftime show - Wikipedia
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