Kate Moss

She posted a picture on Instagram of a letter from a fan called Fiona, sent in 1994.

In it, Fiona asks two important questions of Kate Moss: How did she get into "modling", and was she really dating Johnny Depp?

If so, she says, she would love Kate and Johnny's "altographs".

Unfortunately, Moss was too busy modelling and dating Johnny Depp (it was indeed true, the pair got together that year) to reply to Fiona's note.

But she's made amends now with an Instagram post showing the handwritten letter and saying that Fiona will be getting a signed Kate Moss book.

In a rare interview, she told the Business of Fashion website she would be launching the business this month.

Ms Moss left Storm, the agency that discovered her at the age of 14, earlier this year.

She told the website: "I don't really want pretty people... I want to create stars."

"I want to focus more on managing people's careers than just [running] a model agency... I want people that want to sing and dance and act."

The launch coincides with London Fashion Week,

Now the 18-year-old no longer has to pretend.

She made her Paris Fashion Week debut in 2015 and this year Moss has appeared in American Vogue and L'Officiel, and landed the cover of French Vogue with model Lucky Blue Smith.