The reality star has described the actress as living 'on another planet' after reading a recent interview with the Oscar nominee in US Vogue.
Keira was talking about the pressures of fame when starting out in show business to the fashion magazine.
She said: "I literally had no life outside of acting."
"I once went to the Glastonbury music festival and was completely surrounded by packs of paparazzi the entire time, so I ended up sitting in a trailer unable to get out."
[Related Story: Katie Price sues former husband Peter Andre]
[Related Story: Keira Knightley on being empathetic toward Kate Middleton]
An unimpressed Katie took to her column in today's Sun to berate the actress's complaint.
She wrote: "Please someone give that woman a lesson in how the other half lives."
"Sitting in a trailer is a luxury at Glastonbury, where people end up getting soaked to the skin, stood knee deep in smelly mud."
However, we can't help but think Kate may have missed the point entirely of what Keira was saying.
Surely Keira decided to go to Glastonbury to enjoy the festival rather than being cooped up in a trailer missing out on all the action?
Katie is currently suing her ex-husband Peter Andre, ex-manger Claire Powell, management company Can Associates and former friend Jamelah Asmar.
The model has filed high court papers alleging that Peter and co were behind a smear campaign against her.