The hottest names in fashion dropped everything they were doing Thursday night to attend the special Balmain after-party in Paris. A blonde Kendall Jenner and a brunette Gigi Hadid coordinated in matching light pink ensembles as they celebrated Balmain design boss Olivier Rousteing's latest runway show.

The after-party was held at the Laperouse restaurant in Paris and was attended by some of the biggest models in the industry like Karlie Kloss, Devon Windsor, Rosie Huntington-Whiteley, Lindsey Wixson, Nadja Bender, Joan Smalls, Cindy Bruna and Lily Donaldson, but Jenner and Hadid were not the only models who changed hair color.

"Olivier wanted to create a surprise," said Sam McKnight, the hairstylist responsible for the swap. "Rosie Huntington-Whiteley's a brunette, Alessandra [Ambrosio]'s a blonde. It's that Balmain cool girl...with a twist."

At the party, Jenner wore an ultra-high-waisted skirt that doubled as a corset and a white sweater. She kept her accessories simple and opted for a simple pair of suede heels with a large buckle on them. Hadid wore a pair of pink high-waisted pants, a powder pink silk blouse and a pink stripped jacket that flowed nearly to the floor.

Earlier in the day, both Jenner and Hadid walked in the Balmain, with Jenner having the honor of opening and closing the show. In the first row of the show sat Jenner's mother Kris Jenner and her brother-in-law, Kanye West. Both were decked in head-to-toe Balmain as they watched Jenner walk the runway.

"I was so proud of Kendall," said Kris Jenner of her daughter. "It was a surprise. I didn't know she was going to be blonde, and I didn't know she was going to open and close the show. I thought she looked great. It's so much fun to see the artistic direction of the show. When she walked away. I didn't realized how tiny her waist was. I said to Kanye: 'Look at her waist. It's so tiny. She's definitely a Balmain girl.'"

Earlier in the day, the "Keeping Up with the Kardashians" family were seen dining at the Hôtel Costes along with hairstylist to the stars Jen Atkin. The group then headed to the restaurant for the Balmain after-party.

Both Jenner and Hadid have been two of Balmain's favorite models, with Rousteing working with them multiple times, including when the brand launched an affordable line with H&M.