Watch: Hailey Bieber Reveals Chic Hair TransformationRachel Brosnahan is going back to blonde. The Emmy winner-who has sported darker locks in recent years-was nearly unrecognizable while filming an upcoming project called Slingshot in Los Angeles Jan. 7 following a recent hair transformation. Rachel was all smiles on set as she rocked newly-dyed honey brown locks worn down in loose waves while wearing a long black rain coat paired with burgundy joggers and UGGs. While the new 'do may have fans turning their heads, the Superman actress previously revealed that blonde is her natural hair color. "I started dyeing my hair really dark when I was 16," she told PopSugar in an interview published in 2020, "and then I waited almost 10 years before I went back to blonde." "Even though I'm a natural blonde," she continued, "and normally I'm a huge advocate for being exactly who you are-but I really feel more myself with dark hair. I always have. I don't know why."readGigi Hadid's Black Bob Hair Transformation Is Her Darkest Look Yet While Rachel has also rocked red hair over the years, she explained that the darker locks feel more true to her.
TheImageDirect.com"When I look in the mirror with dark hair, I feel like I see myself," she added, "and when I look in the mirror with blonde hair, I see a fun but slightly different version of myself." Rachel isn't the only star to undergo a big hair transformation. Keep reading for more celebs who have tried out different styles...
Sami Sheen/InstagramSami SheenThe daughter of Charlie Sheen and Denise Richards shared her at-home hair dying journey, including its many missteps, on TikTok and raved about the results. "I've been wanting to do this to my hair for years now," she said, "and I'm so happy that I finally did it."Raymond Hall/GC Images; Instagram/Carrie UnderwoodCarrie UnderwoodTrading in her signature golden locks, the country music star wrote on Instagram in August 2025, "Well, the last time I saw my natural hair color, I was probably about 12 years old, but I thought it might be time to give it a second chance."Shane Anthony Sinclair/Getty Images; Instagram/Jason MomoaJason MomoaIn July 2025, the actor shaved off his beard for the first time in six years to film Dune: Part Three, which required him to rock a clean shaven look to reprise his role of Duncan Idaho.
Denise Truscello/Getty Images for Live Nation Las Vegas/Instagram/NBCKelly ClarksonThe American Idol winner debuted a shorter hairdo in a July 2025 The Voice promo, trading her signature blonde waves for a shorter, darker bob style.
Instagram / Chris Pratt / Matt Baron/BEIChris PrattThe actor debuted a bearded look, which he sports on season two of The Terminal List, in June 2025.
John Nacion/Variety via Getty Images; Jun Sato/WireImageFinn WolfhardThe 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.
Jamie McCarthy/WireImage; Matt Baron/BEI/ShutterstockSebastian StanThe 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*.
Jon Kopaloff/Getty Images; Steve Granitz/FilmMagicJoJo SiwaIn March 2025, the "Karma" singer debuted her rainbow mohawk at the GLAAD Media Awards. Instagram; TikTokEmily RatajkowskiIn a March 2025 TikTok video, the model called this 'do with shaggy bangs the "worst haircut of my life."Instagram / Gypsy Rose BlanchardGypsy Rose BlanchardThe Gypsy Rose: Life After Lockup star 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.
Clifton Prescod/Bravo/Charles SykesWhitney RoseThe formerly blond Real Housewives of Salt Lake City star debuted a red bob on Watch What Happens Live in January 2025.
Instagram / Hailey BieberHailey BieberThe model debuted lighter locks in September 2024, a month after giving birth to her and Justin Bieber's first baby, son Jack Blues Bieber.
Pascal Le Segretain/Getty Images/Araya Doheny/FilmMagicLily CollinsThe 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."Sean Zanni/WireImage/John Nacion/Variety via Getty ImagesKatie HolmesWhile 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.
Kylie Jenner / InstagramKylie JennerThe 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 Kh