The 47-year-old supermodel's son Presley, 14, and 11-year-old daughter Kaia enjoyed a pizza-making session with the One Direction heartthrob in September at their house.
During the cook out Harry, 19, gave Cindy some of his valuable expertise that he picked up when he worked in a bakery before finding success as a pop star.
She told V Magazine: ''He stopped by to say hi when my kids and I were making pizzas. My kids were doing their own little pizzas and they couldn't slide them off the pan. Harry goes, 'Well, did you put down enough flour so they wouldn't stick?'
''My husband says, 'How in the world do you know that?' and my little girl chimes in,' Oh, he used to work for a bakery, dad. Everyone knows that.' ''
The 1D hunk stopped by the supermodel and her husband Rande Gerber's abode in Malibu, California, but his impromptu visit was revealed when Presley posted a photo of him with Harry and his sister on Instagram.
In a message accompanying the image, he wrote: ''Thanks for stopping by the house again and helping the boys and I make our pizzas @harrystyles (sic)''
In the interview with V Magazine, Cindy also revealed a lot of her success in her career was down to her trusting her gut instinct.
Cindy - who hosted MTV's modelling reality show 'House of Style' - says it was her first nude shoot for Playboy with fashion photographer Herb Ritts in 1988 that gave her the confidence to take on new projects.
She said: ''It was like, 'I'll try MTV, that sounds cool.' But my agents were telling me not to do it. They said I could make more money doing other jobs. But they were wrong, and 'House of Style' opened a lot of doors.
''When I did Playboy, it was a big deal because I was also in Vogue. I trusted Herb Ritts, which is why I did it. So those things worked out in my favour, and it gave me the confidence to go and do other projects. But not everything worked out! I did a movie that was successful for me personally, but not successful in many other ways.''
The 1969 session, including the only known recording of 'Sunshine Woman' by the band, will be included on a re-issue of 'The Complete BBC Sessions'...
The 55 year old actor joined Chris Martin and co. on stage in New Jersey to perform 'Earth Angel' and 'Johnny B. Goode'.
Bjork Digital comes to London's Somerset House in September, along with a single live show at the Royal Albert Hall.
Kim Kardashian released an audio excerpt from a phone call between Kanye and Taylor Swift over the lyrics of 'Famous' - but if it was recorded...
There's very much a strength of conviction in remaining what you were, but arguably more so in becoming what you want to be.
The BBC drama starring Aidan Turner returns to BBC One on September 4th.
Guns N' Roses were detained at the Canadian border last week for gun possession but they're adamant the weapon didn't belong to them.
Filmmaker Spurlock (Super Size Me) is known for his investigative wit, but there's none of...
British pop heartthrobs One Direction became a worldwide sensation when they were thrust together on...
Niall Horan, Zayn Malik, Liam Payne, Harry Styles and Louis Tomlinson may make up the...