She told Vanity Fair that she had her daughter Harper in the car with her, but when she was on the road she realised that she had "forgot something" - her son.

However, all was not lost, with the fashionista turning around the car and headed back for her forgotten child. She said:

"I jumped in my Range Rover, put the car seat in, put my iPod on and drove to school. And then I realised I'd left Brooklyn in the kitchen. I was driving along, talking away, and all of a sudden, I looked down at the seat, and I was like: 'S**t! S**t! I've forgot something.'"

She continued: "'I felt like such an idiot because I was in a huge rush. Harper was in the car, I was in the car, and we were on the way to school - but we did not have the child who needed to go to school. I'd gotten down the road, and I literally had to turn around and drive straight back."