Julia Roberts is a pretty woman regardless of her hair color.

The actress, 57, recently debuted a blonde bob in the trailer for her upcoming film, After the Hunt, which is set to be released in October 2025. In the clip, Julia has what looks to be a shoulder-length blonde wig styled in loose waves and a side part—a far cry from her classic long, voluminous, middle-parted brunette waves.

In the Amazon MGM psychological thriller, Julia will star alongside The Bear's Ayo Edebiri and The Amazing Spider-Man's Andrew Garfield. The Pretty Woman actress will play a college professor who grapples with her star student (Ayo) making an accusation against her colleague (Andrew) while also struggling with a dark secret of her own.

Her blonde hair in the film especially comes as a shock as Julia has not been one to change up her look in the past. In 2024, she even addressed how she's managed to generally look the same all these years.

During a conversation with Richard Curtis, who was the screenwriter for her 1999 film Notting Hill, she explained that she credits her unwavering appearance to "good genes" and "leading a life that is fulfilling."

And Julia—who shares 20-year-old twins Hazel and Phinnaeus, as well as son Henry, 17, with husband Danny Moder—added that the love in her life doesn't hurt, either.

"I do believe in the love of a good man," she said in the 2024 interview for British Vogue. "I believe that my husband loves me and cares for me in a way that makes me feel deeply, deeply happy. And anytime you see someone who’s happy, it doesn’t matter how old they are."

But as long as she's happy, she noted that she's fine with the wrinkles that come with aging—a lesson she learned from a fellow actress.

"Anouk Aimée said to me, many years ago when I was very young and it didn’t occur to me that I would ever have a wrinkle," she reflected, “'You live your face in your life until you’re 50, and then you live your life on your face.'”

Julia isn't the only star who's changed up their hair, whether for a role or for their personal style. For more stars' major hair transformations, read on.

The actor debuted a bearded look, which he sports on season two of The Terminal List, in June 2025.

The Stranger Things star changed up his trademark shaggy hairstyle in May 2025 by debuting a buzzcut at the 2025 Crunchyroll Anime Awards in Tokyo, Japan.

The Marvel actor said goodbye to Bucky Barnes' signature long hair in April 2025, showing off a shaved head at the Los Angeles premiere of Thunderbolts*.

In March 2025, the "Karma" singer debuted her rainbow mohawk at the GLAAD Media Awards. 

In a March 2025 TikTok video, the model called this 'do with shaggy bangs the "worst haircut of my life."

The Gypsy Rose: Life After Lockupstar debuted a short bob in March 2025, more than two months after giving birth to her and fiancé Ken Urker's first child, daughter Aurora Urker.

The formerly blond Real Housewives of Salt Lake City star debuted a red bob on Watch What Happens Live in January 2025.

The model debuted lighter locks in September 2024, a month after giving birth to her and Justin Bieber's first baby, son Jack Blues Bieber.

The Emily in Paris star debuted her dramatic transformation at the world premiere of her new horror movie, MAXXXINE, in June 2024. 

"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 in June 2024, 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 2024 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 i May 2024. 

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.

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