Katie Price has joined Sharon Osbourne in labelling Gerry and Kate McCann as "insane" for leaving their children alone in a hotel room on the night their daughter disappeared.
"It doesn't matter who you are, you don't leave your children," the UK mum of five said when appearing on the ITV talk show Loose Women.
"If you are on holiday, your kids sleep in buggies, why in your right mind would you leave your kids in a room?
"I don't care if it is a safe place or if you can see them or not."
Price said the couple "shouldn't have gone on holiday if they wanted to leave (their children) in a room".
Price's children range in age from 14 years to 18 months.
Her comments were made in support of Osbourne, herself a mum of three, who last week used the McCanns' story to illustrate why babies and young children should never be left alone.
"I will tell you a very quick story. There was a husband and wife on holiday in Portugal," Osbourne said on US chat show The Talk.
"They left their baby in the room sleeping, sleeping while they went to dinner in the restaurant.
"While they were in the resort their baby was taken. And it is like, 'Oh but we can see everything that is going on' and it is, like, insane."
Osbourne made the comments on a US talk show while discussing a question posted on parenting site Mumsnet about whether it was acceptable to leave a sleeping baby at home for a short time.
"This is insane. It is like so many things happen in just a second. If you leave a candle on and the curtain blows on it and it caught on fire," she said.
"And I think of all these scenarios in my head and there is no way in a million years that you would ever do that."
Madeleine McCann was just three when she disappeared from the British family's holiday apartment in Portugal in May 2007. Her parents were dining with friends at a nearby restaurant and the adults were taking turns checking on the children.
A friend of the McCanns described Osbourne's comments as "ignorant" and "ill-informed".
"She should think about the effect it could have on Madeleine's brother and sister, as well as the wider family," the friend told The Mirror.
"Kate and Gerry have never forgiven themselves and this should not have been aired in a random way, as it apparently was.
"It's based on ignorance of the true facts. While she's entitled to her view she should keep it to herself."
Earlier this year Kate McCann told how she believed her daughter had not been taken far away from the scene of her disappearance.
"That's where she last was and I don't think she's been taken a million miles from there," she said.
"I've always said Praia da Luz is the place where I feel closest to her..
"The urge to look for Madeleine absolutely hasn't changed at all. You hear all the time about people who have been missing for years being found – there have been so many cases like that.
"We will never give up. You couldn't settle if you thought about giving up. I want an end, an answer – whatever that is."