Megan Fox is a lady in red.
The Transformers star recently debuted a drastic style change, unveiling a vibrant red hair color and a textured bob on Sept. 5. And while the Jennifer's Body star has sported auburn tresses in the past, she took it to the next level with an extremely bright and bold shade of crimson.
As for what inspired Megan's new look? Her go-to hairstylist Dimitris Giannetos offered insight into her French bob and red velvet hue.
"We wanted something major that was jaw dropping for Megan," he exclusively told E! News. "Just like her fiery personality, this look is so bold."
And like the trendsetter she is, the 37-year-old wanted to switch up her style ahead of the autumn season.
"Megan was ready for a bold change," Dimitris added, "and now seemed like the perfect time, especially since red shades are on trend for the fall."
In terms of the products the hair colorist used to create Megan's red-hot look, he applied Lime Crime's Unicorn Hair Full Coverage Dye, which he said "made this transformation so easy and attainable."
"I simply mixed the bright red shades Valentine and Flaming Red and applied it to the hair in sections," he detailed. "It also includes conditioning ingredients, which is why I love using it, the color lasts and moisturizes your hair beautifully."
It's safe to say Megan is a fan of her transformation, as she was spotted out and about in New York City on Sept. 5.
While enjoying an afternoon outing with fiancé Machine Gun Kelly, the actress looked chic in a gray oversized blazer dress that she paired with beige thigh-high boots that featured a snake-skin-style print and was laced up on the sides. She also accessorized with layers of chunky silver necklaces and matching earrings.
Because of Megan's neutral-colored attire, her red-hot 'do was definitely the mane attraction.
Moreover, the rapper also made a splash with his wardrobe, wearing a bright blue puffer jacket, striped shirt and coordinating pants.
Of course, Megan isn't the only celebrity to get into the fall season before it officially kicks off on Sept. 23. Keep scrolling to see which other stars have switched up their hairstyles ahead of autumn.
Demi Lovato
The singer debuted a lighter, shorter 'do in April 2024.
Kim Kardashian
Back to blonde: Kim debuted a new platinum 'do in April 2024.
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.