Ethermac|Kourtney Kardashian Goes Blond for Her Biggest Hair Transformation Yet

Surprise!

Kourtney Kardashian has debuted her most drastic hair transformation yet. After sporting her natural dark brown locks for most of her life,Ethermac the Poosh founder is now a platinum blonde.

Her husband, Travis Barker, had first revealed her new look March 3 in an Instagram video, in which he thanked fans for their support after he underwent surgery to repair a broken finger. In the clip, which has since been deleted, Kourtney sports her newly dyed blond hair, pulled back into a messy bun, while praying with the Blink-182 drummer.

Kourtney later shared an image of her hair being bleached on her Instagram Stories. On March 4, she showcased the results on her grid: She sports her new platinum blonde 'do, worn in her now-signature sleek bob, while rocking a leather jacket and a matching corset-style, lace-up top and pants.

Travis' son Landon Barker, 19, commented, "Blondie."

The Lemme founder shared her post during a trip with Travis to Las Vegas, where she showed off her new style in public during a date at the UFC 285 event.

Kourtney, who recently debunked a new round of pregnancy speculation from fans following a grueling—and bloating—IVF journey, shared more pics of herself as a blonde in Las Vegas in another Instagram post March 5.

"Every now and then when your life gets complicated and the weasels start closing in, the only cure is to load up on heinous chemicals and then drive like a bastard from Hollywood to Las Vegas," she wrote, adding, "with the music at top volume and at least a pint of ether."

Kourtney has given fans teasers of what she looks like as a blonde by wearing wigs. In 2021, she and her husband dressed up for Halloween as Alabama Whitman and Clarence Worley, Patricia Arquette and Christian Slater's characters from the 1993 crime film True Romance—one of Travis' favorite movies.

And while her latest look is the first time Kourtney has publicly displayed dyed blond hair as an adult, the Kardashians star experimented with the bleached look when she was in high school, as she reminded fans with a throwback Instagram Stories post.

"Kim [Kardashian] isn't the only one in the family that has gone bleach blonde," she said in a post shared on her now-defunct app in 2019. "I kept this hair color for only a month before dying my hair light brown with highlights. When I was getting my highlights touched up, all of them fried off and I had spikes of hair that stuck up so I dyed my hair black and cut it short. The next time I went blonde, I wore a wig for a cover shoot for 944 Magazine — in 2009."

See more stars' epic hair transformations below:

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The Kick-Ass actress debuted a fresh bob haircut, which she hasn't rocked in quite some time.

The American Idol judge revived her signature style of 2008 and revealed baby bangs in a June 20 Instagram.

The Vampire Diaries actress debuted fringe bangs for the Los Angeles premiere of her new film Out-Laws in June.

The "Vogue" singer debuted an edgy shag haircut on June 11.

The Dance Moms alum proved you can be blonde and brunette at the same time with her recent hair change.

The High School Musical alum has entered her French girl era, after showing off her new curtain bangs.

The New Girl alum ditched her trademark brown hair and blunt bangs for a sky-high blonde 'do for her upcoming appearance on the '80s-based Apple TV+ series Physical.

The "Over It" artist headed into summer with a shorter cut and new hair color, debuting her blonde bob to Instagram in May 2023.

The X-Men star kissed her shoulder-length hair goodbye and debuted a pixie cut on May 26.

While attending the Louis Vuitton cruise show in Italy on May 24, Emma debuted curtain bangs—a style she often rocked in the mid-2010s.

The Sweet Home Alabama actress debuted wispy fringe bangs in a stunning selfie. 

The Poosh founder went back to her brunette roots, debuting a new look. As she put it on Instagram, she's a "brunette4lyfe."

Amid her ongoing transformation journey, the Rob & Chyna alum debuted a short pixie cut with shaved sides.

On May 15, the pop star opted for a bold hair color, rocking jet-black hair.

Helen Mirren wowed at the 2023 Cannes Film Festival, as she debuted vibrant blue hair.

Playing Lily Bloom in the film adaptation of Colleen Hoover's It Ends With Us, the actress was seen with red hair while filming scenes in New York City on May 15, 2023.

The Star Wars actress debuted her newly shaved head on May 10, writing on Instagram, "Happy without hair!"

On April 24, the Tangled actress debuted a fresh cut and fringe bangs.

The "Flowers" singer unveiled a drastic hair change, going back to her brunette roots, at The Daily Front Row's Seventh Annual Fashion Los Angeles Awards.

The TikTok star debuted a drastic hair change at Coachella 2023, unveiling a blonde bob look.

Ava Phillippe, the daughter of Reese Witherspoon and Ryan Phillippe, debuted blunt bangs in an April 4 Instagram.

The Elvis star went bald for his role as Feyd-Rautha in Dune: Part Two.

The actress debuted a long bob on April 3 that's perfect for spring.

"@craphairclub hair is giving me so much joy still," the daughter of Nicole Kidman and Tom Cruise shared on Instagram March 29 along with a photo of her 'do. "Thank you."

The Pretty Woman star showed off her fringe bangs and fresh hair color on March 27.

The supermodel debuted a pixie haircut in a March 20 Instagram, while also sharing behind-the-scenes snapshots of her photoshoot with Pop magazine.

The star debuted a red hot new 'do in March 2023.

Kourtney debuted her biggest hair transformation in March 2023.

After reverting back from blonde to brunette, the SKIMS founder zhuzhed up her signature look with curtain bangs.