According to the latest reports, things are getting pretty heated over who's got the bigger female popstar status.
A source told Hollywood Life that Katy is planning to take a jab at Taylor during her Super Bowl half-time performance (a gig she beat Coldplay and Rihanna to) on 1 February at the University of Phoenix in Glendale, Arizona.
More:Have You Seen?
Suggested For You
Get top stories and blog posts emailed to me each day. Newsletters may offer personalized content or advertisements. Learn more