The former glamour model – who has children Harvey, eight, Junior, five, and three-year-old Princess Tiaamii from previous relationships – loves entertaining friends at the home she shares with husband Alex Reid but doesn't think making an effort with her wardrobe is necessary.
She said: "I am always entertaining. Every weekend, I cook for about 15 to 20 people. I've got this reputation for partying all the time but I can't remember the last time I went out.
"I don't really have any famous friends; it's just my family, friends and all their kids.
I never dress up for dinner parties; I put on my tracksuit or my pyjamas. A good dinner party is about sleeping off your food in front of a film".
The 32-year-old star also claimed she never drinks alcohol at home – but loves to indulge in her favourite tipples when out socialising.
She told The Times newspaper: "When I go out I binge drink but I would never drink alcohol at home – it would just be Diet Coke."
She continued: "I don't really have any famous friends; it's just my family, friends and all their kids."
Katie also revealed that she is happier playing board games than going to a celebrity party.
She added: "We play Balderdash or Articulate or watch a movie in the cinema room."