The performance will take place at the University Of Phoenix Stadium in Arizona on February 1
A new commercial shows Perry preparing fire-breathing shark and unicorn for appearance
Singer says she won't pay to play the prestigious TV slot
Singer says: 'If the Illuminati exist, I want to be invited'
The singer told the director in charge of the production she's interested in playing lead character Cher
The hip-hoppers say 'Dark Horse' lifts from their track 'Joyful Noise'
Offer follows recent meeting at a signing session for Clinton's new book 'Hard Choices'
Singer's first signing is pop artist Ferras
More than 65,000 people had signed petition claiming that video was offensive to Muslims
The 'Roar' singer says they've discussed working together "for years"