[Katy] is reportedly enlisting the help of Diplo, who famously also had beef with Taylor, to record a song called Crocodile Tears. Ouch.
A source told The Sun: "Katy knew Diplo would be just the man to produce Crocodile Tears for her and has now registered it.
"So far she's been very restrained with what she's said about Taylor in public but is now ready to put her side across via the song - which is all about being fake.
"It isn't yet known whether it would be released as a one-off or as part of Katy's fourth album, but she is keen for fans to hear it."