Billie Eilish's latest look is red hot.
The "What Was I Made For?" singer set Lollapalooza ablaze when she walked out on stage with a fiery hair transformation.
During her performance at Grant Park in Chicago on Aug. 3, Billie debuted her edgy look, which consisted of her roots dyed in a vibrant red hue while the rest of her strands remained stark black.
To put emphasis on her new color, which was done by colorist Jess Gonzalez, Billie styled her hair in two messy space buns and kept her bangs and a couple of wispy side pieces out. And in true Billie fashion, no detail went unnoticed as she matched her eye-catching 'do to her outfit.
For her set, the 21-year-old paid homage to the city's NBA team, wearing a black and red Chicago Bulls jersey that featured one of Michael Jordan's iconic sports numbers, 23. Billie paired her top with black-and-white basketball shorts, coordinating calf-length socks and her new Nike Air Alpha Force sneakers.
The Oscar winner's bold makeover—which has since become one of her trademark hairstyles as she previously donned green roots with black hair—comes three months after she discussed the criticism of her evolving style.
"I spent the first 5 years of my career getting absolutely OBLITERATED by you fools for being boy ish and dressing how i did," she wrote on Instagram Stories in May, "& constantly being told i'd be hotter if i acted like a woman."
However, since embracing a softer and sexier side, she said she still received complaints about her sense of fashion.
"And now when i feel comfortable enough to wear anything remotely feminine or fitting, i CHANGED and am a sellout," Billie continued, "'What happened to her' oMg iT's nOt thE sAmE biLlie she's just like the rest, bla blah...you guys are true idiots."
As she put it, "I can be both you f--king bozos. LET WOMEN EXIST!"
It's clear, the musician is continuing to march to the beat of her own drum.
And of course, she's not the only star to change her signature look in recent months. Keep scrolling to see all of the other major hair transformations—who know, it just might spark inspiration during your next salon visit.
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.