The mother-of-four certainly kept all eyes on her at the BBC studios in London on Saturday (26 October), wearing a hot pink jumper, quirky sheer panelled leggings and a pair of silver heels.
Loving the blinged up silver sunglasses too!
The following day, she opted for an equally eye-catching ensemble, teaming a vivid purple jumper with patterned trousers and purple platforms at a signing.
True to form, the crafty businesswoman also made sure she was clutching a copy of her autobiography all day so the cameras could catch it!
Katie released her new book last week, which details her life from the unhappy period when her marriage to ex-husband Alex Reid broke down, to finding love with third husband Kieran Hayler.
She promises a no-holds-barred account of her relationships in between as well, including those with Argentinian ex-fiancé Leandro Penna and rugby star Danny Cipriani.
And even though she's only just finished this book, she's already planning her next! "I've got four chapters already for the next book, and trust me, it's explosive," she told Reveal recently.
Katie had been keeping a low profile ahead of the launch of her book, enjoying life at home with Kieran and their newborn son Jett.
The 35-year-old married Kieran in the Bahamas in January after a whirlwind romance and they welcomed their first child together that summer.
During an interview on ITV's This Morning last week, the former glamour model admitted she was eager for another handful of kids. In addition to Jett, she's also mum to sons Harvey, 11, and Junior, 8, and daughter Princess, 6.
Katie also spoke about Kieran's part-time job as a male stripper, saying she's fully supportive of what he does and won't let him quit.
"Kieran said, 'Oh now I've got a baby I'll give it up.' I said, 'No you're not, you do it on your Saturday night. Every man would love to be in that situation to stand there with all these women adoring him. It's a good little buzz for you.' I'm the most jealous person ever but when I go and watch his show, the way it's done, the women can't touch him and at the end he gets the wombat out but really it's such a good show."
Check out our recent video chat with Katie below:
Check out some of Katie's craziest launch outfits below: