Best friends do everything together -- including swap hair colors, according to Kendall Jenner and Gigi Hadid.

The super hot models showed off their new 'dos during Balmain's 2016-2017 fall/winter ready-to-wear collection fashion show on March 3, 2016 in Paris, France.

Kendall walked down the star-studded catwalk rocking tousled blonde locks with dark roots. Her 20-year-old friend looked strikingly different with brunette curls herself.

The second to oldest sister in the Kardashian family went seemingly braless during the show while wearing a semi-sheer light periwinkle striped top that was layered under a tied up corset and a matching cardigan with shoulder pads. The ensemble was paired with color matching thigh-high boots and a very large choker necklace.

Gigi wore a very similarly colored getup. She was dressed in a tight pinned up corset-like long-sleeve high-necked top, a matching skirt and the same thigh-high boots as Kendall, but in a tan color.

Kendall also took to Instagram to share a selfie of she and Gigi still rocking their new hairstyles.

"#KenGi swap -- post @balmain" she captioned the photo of the models pouting while wearing similar Aviator sunglasses.

The gorgeous girls' hairdos were styled by celebrity stylist Sam McKnight, who also shared a post of his work on social media.

"#hairswap @balmain #pfw #hairbysammcknight #kendalljenner #gigihadid @tompecheux #balmain #backstagehair #backstage #backstagebeauty," he captioned this Instagram post of himself posing in between the two beauties.

Even Kris Jenner took to Twitter before the show to share her support.

"Blonde for @balmain! @kendalljenner #proudmama #parisfashionweek @gigihadid #Repost @vogueparis," she tweeted along with another photo of her second to youngest daughter and her friend.

The fashion show also featured supermodels Jourdan Dunn, Karlie Kloss, Rosie Huntington-Whiteley and Alessandra Ambrosio. Both Rosie and Alessandra also featured different hair colors, with Rosie looking almost unrecognizable in a long dark 'do and Alessandra going from brunette to blonde.