Early Tuesday morning Katy Perry gave up the details about her feud with Taylor Swift, and she ended up turning up the heat on Taylor's girl squad.
Katy took a ride alongside James Corden for his latest "Carpool Karaoke"on CBS, and after belting out her new tune "Swish", Corden got her to talk about her "beef" with her fellow pop star.
Watch and sing along as Katy has no problem letting the world know her feelings about Taylor below.