Karlie Kloss is switching up her style.
While she's had blonde hair for years, the 29-year-old supermodel took to Instagram on Jan. 19 to debut her brand-new brunette ‘do.
"After a decade of being a blonde, I finally crossed over to the dark side," Kloss wrote to her 10 million followers alongside photos of her turning a New York City block into her own personal runway. And it looks like they were loving the look.
"Gorgeoussssss," Sailor Brinkley Cook wrote in the comments section. On behalf of her fellow brunettes, Rachel Brosnahan added, "Welcome."
Kloss, who welcomed her first baby with husband Joshua Kushner in 2021, had hinted she was ready for a hair change after she posted a picture of herself in a salon chair along with the words "…something different."
And although it's been a minute, Kloss has sported darker tresses before, last rocking the hair hue in 2014. Still, her fans hadn't forgotten. "BRUNETTE KARLIE IS BACK," one commenter wrote. "AAAAHHHHH." Added another, "We've missed brunette Karlie! You look flawless btw, glad that you decided to return back to the dark side after all these years."
Kloss isn't the only celebrity to recently undergo a hair transformation. To see more stars' looks, scroll on.
Rihanna
The Fenty Beauty founder debuted a bright blonde hair transformation April 17 while celebrating her latest Fenty x Puma collection in London.
Delilah Belle Hamlin
The model debuted a bleach blonde pixie cut at the FRAME event April 4.
Megan Fox
The Jennifer's Body star traded in her bubblegum pink tresses for a baby blue bob, which she debuted April 2.
Zendaya
Less than a month afer chopping her hair into a long bob, Zendaya debuted a honey blonde transformation at the Challengers premiere March 26.
Elle Fanning
The Great star ushered in spring with a fresh cut, as she debuted a long bob March 25.
Rachel McAdams
The Mean Girls alum swapped out her signature blonde hair for a dark brunette transformation on March 18.
Bre Tiesi
The Selling Sunset star looked completely unrecognizable after debuting a dramatic blonde transformation March 16.
Kelly Osbourne
The Fashion Police alum ditched her signature purple hair after six years, tinting it an icy silver in March 2024.
Zendaya
The Dune actress debuted a shoulder-grazing bob at Essence's Black Women in Hollywood Awards March 7.
Sydney Sweeney
The Anyone But You star made a showstopping appearance at Miu Miu's fall/winter 2024-2025 show during Paris Fashion Week. For the March 5 event, she unveiled a dramatic long bob haircut.
Zoey Deutch
To prepare for her upcoming role as Jean Seberg, the 29-year-old debuted a bleached blonde pixie cut.
Anne Hathaway
The Princess Diaries alum unveiled fringe bangs at the 2024 Film Independent Spirit Awards.
Selena Gomez
The star debuted a bangin' new style at the premiere of her friend Nicola Peltz Beckham's film Lola in February 2024.
Jennifer Lopez
The "On the Floor" singer made a dramatic hair change, as she debuted a chin-grazing bob cut at Schiaparelli's haute couture spring/summer 2024 show on Jan. 22.
Gypsy Rose Blanchard
In January 2024, a month after her prison release, the now-influencer shared a pic of herself sporting a shorter 'do.
Kylie Jenner
Kylie Jenner traded in her dark locks for a pink 'do in January 2024.
Julianne Hough
In January 2024, the Dancing With the Stars personality shared a video of herself cutting her own hair. "Out with the old energy," she wrote, "and in with the new."
Kate Beckinsale
The Underworld actress took the plunge and went full blonde, while also debuting a short bob haircut.
Riley Keough
The Daisy Jones & The Six actress debuted jet-black hair on Nov. 2.
Eva Longoria
The Flamin' Hot director recently showcased her dramatic transformation, debuting a choppy, layered bob on Nov. 9.
Alix Earle
The TikToker debuted a fresh haircut, revealing a long bob.
Miley Cyrus
After rocking platinum blonde tresses for years, Miley officially returned to her brunette roots to model Gucci's new collection.
Kate Middleton
The royal recently showed off her new curtain bangs during a public appearance on Sept. 27.
The actress recently debuted a bright red hair color and equally bold blunt bob haircut.
Cara Delevingne
The supermodel debuted a punk-rock hairstyle at Vogue's World Show during London Fashion Week on Sept. 14
Brittany Snow
The Pitch Perfect star made a drastic hair change, going from dark brunette tresses to a bright blonde look.
The Scream actress debuted a bubblegum pink style in August 2023.
The son of David Beckham and Victoria Beckham got his head shaved by Selena Gomez's little sister, Gracie Teefey, in August 2023.
The Can't Hardly Wait actress showed off her drastic hair change, debuting dark red hair and a blunt bob haircut.
The Second Act star unveiled bright blonde highlights in a new selfie.