08/01/2015 10:16 GMT | Updated 20/05/2015 06:12 BST

Things Get Heated Between Katy Perry And Taylor Swift

In case you didn't know, Katy Perry and Taylor Swift are not gal pals.


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.