The supermodel besties, who underwent a dramatic hair swap for Balmain's Paris Fashion Week show, put on a bold display of the power of pink in matching Balmain outfits at the after party on Thursday 3 March.
Hadid shared the photo below with the caption, "Playin' Barbie #kengi"
The hair swap had been styled by the Kardashian's favourite hairdresser Jen Atkin, with wigs made by Sam McKnight.
"Watch out @barbiestyle you've got some major competition here at #pfw," wrote Atkin on Instagram.
This battle may be putting Atkin in a rather uncomfortable position as she recently signed a new client - Barbie.
Atkin had revealed she was working on a collaboration with the miniature style icon on Instagram earlier that day.
"Just arrived at #pfw and can finally debut my collab with the biggest Muse of all time... @barbiestyle," she wrote.
"I had the honour of creating fournew looks for her inspired by today’s coolest hairstyles.
"First up, the high pony! The definition of #ponytailgoals with a super thick, flirty textured pony a lot like versions I’ve done on my clients.
"Do you die for Her dark strands pair perfectly with a dark lip? Its so NYC chic! This is a major dream come true... I literally still have my childhood barbies shoes and brushes!"
Hadid and Jenner were joined at the Balmain bash by Jessica Alba, Lily Donaldson, Stella Maxwell, Muse's Matt Bellamy and Elle Evans.