The footwear legend has created a series of shoe sketches which The Fashion designer plans to incorporate onto knitted dresses and jumpers she has designed.
Christian said: "I have always loved Bella's jumpers, so I couldn't have been happier when she asked me to give her designs which, Bella thought, would look great once knitted."
Bella - who has been friends with Christian for over 20 years - explained she has always admired his sketches and has wanted to use them in her designs for some time.
She told Vogue.com: "Christian and I have been friends for 20 years now and he is godfather to my son Jimmy. I have often admired his drawings and I wanted to use some to put on my knitwear. I love the way a drawing comes to life when it is reinterpreted in another medium. On a knit it you get the sense of someone having actually drawn it, rather than it being a computer generated image."
While the collection is set to feature garments in black and green, Bella plans to inject some extra excitement by adding hints of Lurex glitter.
The knitwear - to be made using 100 per cent super-fine merino cashwool - will be available in stores from mid-July.