The 34-year-old socialite will be joining Jennifer Saunders who has been on board starring as the legendary Eddy Monsoon and Joanna Lumley, reported Ace Showbiz.
Kim is the latest celebrity who has agreed to star in the upcoming comedy flick following the likes of supermodel Kate Moss, former Spice Girls singer Emma Bunton, and singer Lulu.
"Kim is a huge name, and she's in town for fashion week and loved the idea of being involved," said a source.
"Getting her on board is a massive coup for the film, but also a big deal for Kim - 'Absolutely Fabulous' is an iconic name around the world, so it's an honour to be part of it. The hype around the film will be massive and fans will be really excited at its release, so it's looking likely to be a huge success."