The model-turned-businesswoman posted a string of photos to her YouGossip account showing off her svelte figure from a variety of angles.
Love the neon knickers!
Katie, 35, told fans that husband Kieran Hayler, 27, was going to oversee her fitness regime as she gets back into shape. He's also been cooking her healthy meals and making healthy shakes.
"When Kieran starts training me in 4 weeks time I'm going to have the best body I've ever had," she said. "Wooo, my mission."
She added: "If I can do it anyone can... Not that I'm in any rush to get back to shape but eating healthy works for me:)."
However, plenty of Katie's fans were quick to point out she already has a pretty awesome body…
Katie gave birth to her fifth child, a baby girl, on 4 August.
So far, Katie hasn't given fans a glimpse of her newborn daughter or even revealed the little one's name. Come on Katie, we're dying to know!
It's her second child with part-time stripper Kieran, who is also the father of her one-year-old son Jett. Katie also has kids Junior, Princess and Harvey from previous relationships.
Katie's pregnancy wasn't the easiest as she discovered during it that Kieran had been having an affair with her best friend - an affair that she believes started around the time she gave birth to Jett.
After initially vowing to divorce him, Katie did a U-Turn and slowly let Kieran back into her life, although she has warned that if he cheats again she'll kick him out.
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