The 36-year-old supermodel has stripped off for a series of sexy black and white images - where she is wearing nothing but a German Kaiser helmet - taken by her rocker lover.
A source told The Sun newspaper: "Kate is very proud of them and is considering whether to exhibit them or not."
While the British catwalk beauty makes up her mind about whether or not to display the photographs, they are being looked after by her friend Rose Ferguson and her husband Jake Chapman.
Kate - who has seven-year-old daughter Lila Grace from a previous relationship - and The Kills guitarist Jamie have been dating for almost three years.
Earlier this year, the model shed her clothes on a beach for a raunchy photo shoot which appeared in the Spring/Summer issue of Vogue Homme International magazine.
Most recently Kate took to the catwalk to help raise relief funds for earthquake-stricken Haiti.
She was joined at the Fashion For Relief event in February by organiser Naomi Campbell and Girls Aloud stars Kimberley Walsh and Nicola Roberts.
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