Kylie Jenner is feeling the blues.

The Kylie Cosmetics founder, 27, stepped out at celeb hotspot Sushi Park in Los Angeles on Sept. 4 rocking a drastic new blue hairstyle. Kylie kept the rest of her look low-key, opting for a camo hat, white tank and dark pants as she left the restaurant solo.

The Kardashians star gave fans a closer look at her new 'do in an Instagram post the next day featuring a handful of selfies taken in her car.

Kylie captioned the Sept. 5 carousel of images, "teal the end of time," classifying her new locks with a more specific shade of blue.

Her best friend, Anastasia "Stassi" Karanikolaou, gave her approval to the new look, commenting, "oh yes baby," under the post.

The hair transformation harkens back to the former Life of Kylie star's "King Kylie" days, where she was known to frequently change her hairstyle and hair color. At the time, Kylie—who shares kids Stormi, 6, and Aire, 2, with ex Travis Scott—often made a splash with bright shades of pink, blue and green.

Her latest change to blue is unexpected, though, given that in recent years she has favored darker tones that more closely match her natural hair color. 

The last time the Khy founder called back to her beloved "King Kylie" era was back in June, when she sent fans into a tizzy with a photo of herself rocking a Marilyn Monroe-inspired blonde bob. She captioned that post, "did someone say they missed king kylie?"

Older sister Khloe Kardashian commented on the photo, "I did! I did!!!!!!"

Kylie isn't the only KarJenner to debut a drastic new hairdo this week, either.

Her sister, Kendall Jenner, debuted a bob-and-bangs look for a new Calvin Klein campaign this week that felt like a subtle homage to their mother, Kris Jenner.

Keep reading for more major celebrity hair transformations.

The Emily in Paris star debuted her dramatic transformation at the world premiere of her new horror movie, MAXXXINE, on June 24. 

"Changing my hair always brings out different sides of my personality and I love playing around," Lily told Vogue. "This cut and color feels bolder and yet somehow lighter. And completely more me—right now."

While attending Chanel's Tribeca Film Festival Artists dinner on June 10, Katie debuted a subtle, yet striking transformation of rich caramel balayage highlights that were blended throughout her brunette tresses.

The Kardashians star debuted a platinum blonde look and a bob haircut after rocking waist-length strands for quite some time.

"Did someone say they missed king kylie," Kylie teased in the caption of her June 8 Instagram post, to which her sister Khloe Kardashian cheekily replied, "I did! I did!!!!!!"

The former Bravo star debuted a platinum blonde look during Paris Fashion Week Haute Couture.

The Heads of State star debuted a drastic haircut—a shoulder-grazing bob—while attending a Bulgari event in Rome on May 20. 

In May 2024, the actress chopped her hair into a bob that many fans on social media said reminded them of one of the looks she sported as Mary Camden on the '90s series 7th Heaven.

The Transformers actress returned to her dark brown tresses and debuted a sassy bob in May 2024, a month after she dyed her hair blue to enter what she dubbed her "Jedi era."

At age 17, the daughter of the late Anna Nicole Smith debuted a new lob hairstyle overnight during 2024 Kentucky Derby weekend, which she attended with dad Larry Birkhead.

The singer debuted a lighter, shorter 'do in April 2024.

The Fashion Police alum debuted a blonde bombshell hair transformation May 8.

Back to blonde: Kim debuted a new platinum 'do in April 2024.

The Fenty Beauty founder debuted a bright blonde hair transformation April 17 while celebrating her latest Fenty x Puma collection in London.

The model debuted a bleach blonde pixie cut at the FRAME event April 4.

The Jennifer's Body star traded in her bubblegum pink tresses for a baby blue bob, which she debuted April 2.

Less than a month afer chopping her hair into a long bob, Zendaya debuted a honey blonde transformation at the Challengers premiere March 26.

The Great star ushered in spring with a fresh cut, as she debuted a long bob March 25.

The Mean Girls alum swapped out her signature blonde hair for a dark brunette transformation on March 18.

The Selling Sunset star looked completely unrecognizable after debuting a dramatic blonde transformation March 16.

The Fashion Police alum ditched her signature purple hair after six years, tinting it an icy silver in March 2024. 

The Dune actress debuted a shoulder-grazing bob at Essence's Black Women in Hollywood Awards March 7.

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.

To prepare for her upcoming role as  Jean Seberg, the 29-year-old debuted a bleached blonde pixie cut.

The Princess Diaries alum unveiled fringe bangs at the 2024 Film Independent Spirit Awards.

The star debuted a bangin' new style at the premiere of her friend Nicola Peltz Beckham's film Lola in February 2024.

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.

In January 2024, a month after her prison release, the now-influencer shared a pic of herself sporting a shorter 'do.

Kylie Jenner traded in her dark locks for a pink 'do in January 2024.

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."

The Underworld actress took the plunge and went full blonde, while also debuting a short bob haircut.

The Daisy Jones & The Six actress debuted jet-black hair on Nov. 2.

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