Billie Eilish
Back in November 2021, the "Happier Than Ever" singer "went red for a week." She ultimately chose more of a brunette hair color.
Demi Lovato
The "I Love Me" singer debuted a dramatic hairstyle ahead of the New Year: A fiery buzzcut!
Saweetie
Saweetie is ahead of the "new year, new me" trend! The 28-year-old star showed off her new buzzcut on Instagram on Christmas Eve.
Miley Cyrus
Miley Cyrus added some dark streaks to her blonde hair for a cool new look, which she debuted on the Dec. 9 episode of The Tonight Show.
Jessica Alba
The Honest Beauty founder showed off her fresh bob haircut with a series of glamour shots on Instagram on Dec. 4.
Lily Collins
The Emily in Paris star debuted a new look while doing press for the upcoming second season of the Netflix series. "New bangs, old habits," Lily wrote on Instagram on Nov. 29, adding, "Yup, they're real!"
Katy Perry
Last Friday, er, Wednesday night, Perry returned to her dark hair after previously sporting a blonde 'do.
Dove Cameron
In November 2021, at the LACMA Art+Film gala in Los Angeles, the Disney Channel star showcased a brunette style after appearing as a blonde for years.
Florence Pugh
The Midsommer star debuted a dramatic pixie cut with shaggy bangs on Oct. 30. "I did a thing..," she captioned her Instagram post.
Anne Hathaway
The actress ditched her long hair for a curly bob on the set of her next movie.
Debbie Johnson
The reality star debuted a new hairstyle ahead of her appearance on 90 Day: The Single Life.
AJ McLean
The Backstreet Boys star swapped out his signature beard for a bare face.
David Harbour
The Stranger Things actor was spotted sporting a comb-over for his role in the new Netflix movie We Have a Ghost on Oct. 25, 2021.
Selena Gomez
Look at her now! Selena Gomez said goodbye to her lovely long locks and hello to a chic shorter style with her new bob.
Megan Fox
The actress, who typically sports dark brown hair, debuted this silvery look in October 2021 on the set of the film Johnny & Clyde.
Joaquin Phoenix
While stepping out at the New York Film Festival, the Oscar-winning actor showed off his shorter hairstyle that featured a buzz cut on top.
Adam Levine
The Maroon 5 singer kicked off fall with a blue 'do in October.
Hayden Panettiere
On Oct. 1, Hayden returned to Instagram after taking a sixth-month break to debut her shoulder-length hairstyle and curtain bangs.
Katy Perry
The singer underwent several hair transformations since she rose to fame in 2008, and in September 2021, she came full circle with a brunette wig.
Antonio Banderas
The actor traded his signature dark hair for a reddish brown style at the 2021 Venice Film Festival.
Seth Rogen
The Pineapple Express star opted for a lot less hair in a look he debuted in September 2021.
Chip Gaines
To help raise funds for St. Jude Children's Research Hospital, the Fixer Upper star vowed to go bald if fans donated money. After raising more than $300,000, Chip revealed his look.
Kristen Stewart
The Spencer star traded in her dark-rooted tresses for an orange-tinged mane.
Camila Cabello
The "Don't Go Yet" songstress declared herself a "pyschofreak" while debuting her blunt bob on Instagram.