Both are former Apprentice runners-up – and both have a panache for poking the wasps' nest whenever the mood takes their fancy.
Today, it's Luisa's turn, and her target du jour is stay-at-home-mums.
In her column for the Daily Star, the mum-of-one called on full-time mothers to stop saying they have 'the hardest job in the world'.
She wrote: "It's not a job, it frustrates me when people call being a mother a 'job' you become a parent because you want to be one, not because you have to be.
"So please, if you choose to be a stay-at-home-mum stop telling people you have the hardest job in the world, you don't.
"You cannot possibly consider your flesh and blood that you bore out of love, hard work.
"Yes it's laborious, yes it's monotonous and yes I could never stay at home with my child singing twinkle twinkle little star all day and drinking coffee with other mums in the local buggy park but please stop calling it a job."
Hardly original, as it's pretty much what controversial mum-of-three Katie has said, and keeps saying.
Luisa – who has a three-year-old daughter called Dixie – insists that she never sees spending time with her child as a chore, even when woken up at 1am and 3am despite 'having an alarm set for 5.30am... for the photo shoot I'm doing today'.
She added: "I'm a working mum, I'll always be a working mum. "I went back to work two days after giving birth and if I had another child I would do exactly the same – maybe I'd stretch to two weeks off next time though."
And taking a pop at the 'trolls' who have attacked her on Twitter, Luisa added: "The hardest thing about being a working mum is not the hostility I receive from stay-at-home-mums, but the negativity I receive from random trolls who constantly call me out for working and not being with my child.
"I would rather be working hard without my child providing for her than living on handouts from the state with her.
"What shocks me is no one ever asks where a father is. Will anyone be asking Simon Cowell why he isn't with Eric when he is back at Britain's Got Talent auditions?
"I would place bets on the fact no one would even consider being so rude.
"Why does society always berate working mothers? And why are stay-at-home mothers put on a pedestal? "I am constantly criticised if I do a lingerie shoot, mainly because I'm a mother and 'what would my daughter think?'
"I've seen loads of pics of my mum when she was younger in bikinis looking fabulous and have never felt ashamed.
"I raise my daughter with a strong work ethic, knowing the difference between right and wrong and she is a happy, well-rounded. full-of-life, very independent three-year-old.
"My working life means she goes to nursery full time, and I have a live in nanny too – because if I'm not around I want her to have another constant person in her life. Of course she has a father who dotes on her, who also works full time and who shares responsibility of her 50/50 with me.
"I'm a strong believer in having it all. I want to have my businesses and run them successfully, I love having a close circle of very sociable friends and partying with them (I am only 26 after all!) and I know I can be a brilliant mother too - my daughter is testament to that.
"If I only have 4 hours sleep a night to make it all happen then so be it, life is for living not sleeping.
"So before you take to the keyboard to pour hate on a working mother next time, think about the bigger picture - though, on second thoughts the haters' minds are probably too small to be able to do that."
Oh dear. Do these falsely drawn battle lines between mothers drive you mad?