This time it's the 34-year-old's baby half-sister Kendall, 19.
Kendall showed off her drastic new look this week on set of a new campaign for Fendi.
The supermodel posed with a friend and looked unrecognisable with her new tresses.
Uploaded to the official Fendi Instagram, the snap was captioned: "Who's who?"
And it did take us a while to work it out…
While there's every possibility her new hair is just a wig for the photo shoot, it's proof that Kris and Bruce's daughter can rock any look.
Kendall's modelling career has been going from strength to strength, with the teen recently posing for GQ.
Following in Kim's footsteps, Kendall stripped down for the men's lifestyle magazine – but didn't bare all like her older sis.
And, despite being part of one of the most famous families in the world, it seems Kendall is still proud when her hard work pays off.
Today she uploaded a snap of her latest Calvin Klein billboard in New York, showing her posing in just a vest and shorts and still looking amazing.
Is there any look this girl can't pull off?