Focusing on a topless black and white picture of the model as a teenager that was shot by Day for The Face, the 40-year-old admits that she was self-conscious about her figure at the time.

“I was really embarrassed about my body, very, very self-conscious,” she says. “They came out when I was still in school.”

Knight then touches on the subject of her much-scrutinized "waif" figure, confirming "I know from working with you, you do eat."

"Yes, I was just really young and thin, that's what happens," she says.

Moss becomes animated as she talks about her 11-year-old daughter Lila Grace. "My daughter is tiny. My mum said to me 'oh, I was as skinny as you' and I was like 'right mother!' and that's what my daughter says to me now. She's like, 'Yeah, okay, you were really thin!' It's just age I think, you know. When you're a teenager and of course I was working in fashion back in the day, they didn't really feed you. The jobs I was working didn't have catering .. it was chips or whatever."

"I'm a fabulous scapegoat," she jokes, telling Knight that media reports blaming her for "heroin chic" in the '90s has led to an in-joke among her friends, who blame her for everything, including their own hangovers.

'My friends are like, 'Ugh, it's Kate's fault I am hungover.' And I'm like, 'Yeah, right! I didn't even see you.'"

There's also a charming moment when Knight addresses the model's superstar power and how magazine sales "rocket" when she is on the cover.

"I know it's weird though innit, I don't understand it," she says, shrugging, before quickly adding "let's not question it!"

The model is interviewed about her experience of being painted by Lucian Freud in another video chat with Nick Knight:

Video: Kate Moss on being Kate Moss