Kate Moss is planning to produce a photo book with her boyfriend.

Kate Moss

Kate Moss

The 41-year-old model has been romancing Count Nikolai Von Bismarck, 28, for several months, despite her marriage to Jamie Hince not officially being over, and the pair are now planning to collaborate professionally too.

A source said: "Nik has been obsessively taking photos since he was 13 and has been documenting much of his time with Kate.

"She loves his work and thinks he's managed to capture a side to her not often seen.

"They both like the idea of doing something special with his pictures of her, perhaps a coffee-table book. It's fun for them to collaborate creatively."

Though the couple have previously tried to keep their romance secret, they were pictured holding hands in Brazil earlier this month, and Kate - who has 13-year-old daughter Lila with ex-boyfriend Jefferson Hack - is no longer worried about hiding their relationship.

The source told Britain's Grazia magazine: "It's unlikely Jamie will appreciate such a public display of affection but as far as Kate's concerned, it's none of his business.

"Her romance is a welcome distraction from her pending divorce - she's fallen hard for Nik and doesn't care who knows."