Taylor Swift once pretended she didn't know who Katy Perry was!
We would update you on ALL the reasons why Taylor Swift and Katy Perry don't get on... but it turn out to be an essay!
So, in short... they have previous!
It wasn't too much of a surprise then when it was revealed that apparently Taylor Swift once threw shade at KP by pretending to not even know who she was!
According to US talk show host Andy Cohen in his new book, he was with Taylor Swift at this year's Met Gala when she wanted to get a better view of Lady Gaga who was the night's performer!
In an extract from the book, Andy says; "Why I felt I needed to get involved I will never know (maybe I was auditioning for her squad?) but I innocently said exactly the wrong thing to her, which was, 'Your friend Katy is sitting in the corner and there's plenty of room around her.'"
To which Taylor replied: "Katy who?"
Andy adds: "I said, 'Perry,' at which point she clearly let me know that she's the exact opposite of her friend."
We're not even surprised anymore... your move Katy!