The reality TV star doesn't think the fashion designer and mum-of-four - who revealed in a magazine interview she helps her children with their homework over breakfast and drops them off to school herself before working a full day at her fashion label - is being honest about her daily routine, suggesting she has a full team of staff including nannies and chauffeurs to help her cope with her kids' demands.
Writing in her column in The Sun newspaper, she said: ''I don't think she's being entirely honest. What you don't see in all the shots of her being the perfect mum is the nanny who is probably pushing the buggy behind her, the security team holding her bags, or the driver chauffeuring her on all those school runs.
''From her hair to her shoes, you never see Victoria looking anything less than immaculate and there is no way you can achieve that, day in day out, without help if you're a working mum with four kids.''
Katie - who has three children, Harvey, 10, Junior, seven, and five-year-old Princess Tiaamii - insists that most mums' morning routines, including her own, are much more manic than Victoria, 38, perceives.
The 34-year-old beauty added: ''I've got a nanny and I'm happy to admit it. School mornings in my house are still a nightmare, though.
''For a start, the kids never want to go to school and try to pull a fast one, saying they've got a stomach ache. I'm like a bad version of Nanny McPhee yelling, 'Come on, get your uniforms on!' Junior winds Princess up and vice versa, and finally, when I've managed to pull on a tracksuit and we're halfway down the drive, we realise someone's forgotten their book bag and we're back to square one.''
Former Spice Girl Victoria - who has four children, Brooklyn, 14, Romeo, 10, Cruz, eight, and 19-month-old Harper with husband David - described a typical day in her life to the US edition of Harper's Bazaar magazine earlier this week, claiming she worked ''non-stop'' between running her business and looking after her kids.