Major Celeb Hair Transformations of 2019

The "Love Me Anyway" songstress took to Instagram on Dec. 5 to share a snapshot of her remarkably short new look. In the pic, Pink holds her lopped-off locks in her hands while flaunting her freshly-styled, buzzed look for the camera. "Letting Go," she captioned the evocative photo. The new style came less than a month after ET spoke with the songstress on the carpet at the CMA Awards in Nashville, where she revealed that she's planning on stepping back from making music in the coming year.

Gone were Bieber's usually dirty blonde locks -- which he sported at his and Hailey's second wedding ceremony in September -- when he stepped out with bubblegum pink hair on Nov. 24. The "Sorry" singer matched his outfit to his new 'do, sporting pink sweatpants in a slightly darker hue than his hair as he played basketball with some friends in Beverly Hills, California. An oversized white T-shirt and matching white sneakers completed his look. 

After spending a few months with a hue closer to her natural dirty blonde roots, Hadid returned to the dark side, debuting a dark chocolate brown bob during a Vogue Fashion Festival photocall in Paris on Nov. 15.

It may be fall, but the "Circles" singer went against the grain with her lighter hair color. "No filter. Just new hair. And I figure everyone goes darker in the fall so why not go lighter?!? Hair cred @leahhofff," Kramer shared on Nov. 3.

The "Graveyard" singer is seeing red! "Been wanting to go this color since I was Poison Ivy last year. 1 year later and it’s time! ??," Halsey captioned a selfie of her new hue on Oct. 31.

The Maroon 5 frontman's mostly-shaved head and faux hawk was on full display at a Los Angeles Lakers vs. Memphis Grizzlies game at L.A.'s Staples Center on Oct. 29.

The Ashlee+Evan singer showed off her new rose-gold 'do at Nine Zero One's 10 Year Anniversary Decade Party at the Highlight Room in Hollywood on Oct. 20. She left the salon's soiree hand in hand with Paris Jackson, and other celebs in attendance included Nina Dobrev, Francia Raisa and Glen Powell.

The moppy-haired actor's head must feel a whole lot lighter! The internet's boyfriend has a fresh new buzz cut that got fans, well, buzzing when he shared his new look on his Instagram Story on Oct. 15. It's not his only updated look as of late -- in September, he dyed his facial hair blond, which also caused an online uproar. 

One day after debuting her new lighter locks -- and teasing a "new era" of music! -- on Instagram, the GRAMMY winner gave us a better look at her new hue while out with boyfriend Anwar Hadid on Oct. 2. As the pair wandered around New York City, it was clear that the "IDGAF" singer was actually blonde on top but still had a darker shade underneath.

Eleven, is that you? The Stranger Things star seemed to channel her Netflix character's season one blonde wig look when her now-very light locks were revealed on Sept. 25. The YSV Salon in Miami, Florida, posted a pic of the 15-year-old actress' new 'do on Instagram, which wasn't even the only time Brown showed off a new look that week. 

She had been sporting a bob for quite some time, but the "Wolves" singer added some length for fall, rocking her new, super long extensinons to a party for choreographer Charm La'Donna in Hollywood on Sept. 25.

One of the last of the KarJenners to hit the bleach even briefly, the newly blonde model walked the Burberry runway during London Fashion Week on Sept. 16. She was back to brunette not long after her Europe work trip.

The first major summer-to-fall transformation came from the pop princess, who debuted her brunette locks on the 'gram on Sept. 4. "Same faces, same dress, new hair !!!!! ?." Spears wrote. "Yes, my sister inspired me to go dark !!!!!!!" Her sister, Jamie Lynn Spears, had gone from blonde to brown for a role in Steel Magnolias. The "Toxic" singer has gone to the dark side before, including when she was pregnant with son Jayden in 2006 and in 2013, shortly after her split from fiancé Jason Trawick.

She's known as a blonde, but Heigl dyed her hair a dark chocolate brown for her new role on Netflix's Firefly Lane. "If you haven’t caught my stories this will be a shock for you..." she revealed on Sept. 3.

Theron's hairstylist, Adir Abergel, took to Instagram on Sept. 2 to show off his famous client's dramatic new bowl cut. "I always feel so blessed collaborating with this insanely talented human @charlizeafrica. I was inspired by early images of Linda Evangelista shot by @therealpeterlindbergh," he wrote. "It took some rad people to make this one come to life. #hairbyadir #charlizetheron #withvirtue."

She's had burgundy-accented hair for years, but the Jersey Shore Family Vacation star has lightened up her locks after baby No. 3! She showed off her new look on Sept. 2, which featured a deep brown base accented by mahogny highlights that faded into honey blonde tips. "WELP 10+ hours & it was so worth it! Thank you to my amazing stylists @bradleystylenyc & @lulustylesnyc for always bringing my hair makeovers to life? MAWMA is happy!" she shared on Instagram.

The Bad Moms star closed out the summer with a sharp bob courtesy of stylist Renato Campora.

He may have been a brunette Bachelor, but when he stepped out for Clayton Kershaw's 7th Annual Ping Pong 4 Purpose in L.A. on Aug. 8, Underwood shocked fans with a new icy hue! 

She tends to sport dark brown locks, but Michele added some blonde highlights courtesy of West Hollywood's Nine Zero One Salon on July 31, which she dubbed a "golden glow."

The Australian rapper's pinstraight blonde locks were upgraded to a bright blue hue for the WNBA All-Star Game 2019.

After a brief stint as a blonde, the Single Parents star went back to her brunette roots in mid-July with a glossy, chocolate hue courtesy of stylist Justin Anderson.

No stranger to switching up her hair color, the actress debuted a dark brown shade in July for the new season of American Horror Story.

The former first lady has typically worn her hair in slick, perfectly manicured loose waves, but she debuted a brand new look at the 2019 ESSENCE Festival: a head full of tight, ombre curls.

"And just like that...baby was brunette again. ?," the GLOW star wrote on June 26 of her hazlenut-hued locks, which were joined by new bangs. 

The Euphoria star briefly sported red locks, showing off the bold hue while promoting Spider-Man: Far From Home in London on June 17. The look was a semi-permanent nod to her character, Mary Jane Watson, who is a redhead in the Spider-Man comic books.

After years of rocking long, dark curly or wavy locks, the "Thinkin Bout You" singer turned up at the 23rd Annual ACE Awards in New York City with an unexpected 'do: a well-coiffed pixie cut! It was a short-lived look, however, as Ciara regularly sported ponytails and bobs throughout the rest of the summer.

The Modern Family star ditched her jet black locks and showed off her fiery side with a new, copper-toned red 'do, which she debuted on Instagram on May 3. The actress embraced her Little Mermaid inspiration by captioning the pic, "Part of yourrrrrr worrrrrld," along with a pair of mermaid emoji.

We're used to seeing Brosnahan as a brunette on The Marvelous Mrs. Maisel, but she's lightened up her look! The 28-year-old actress debuted dirty blonde locks during opening night of the Broadway play, What The Constitution Means To Me, at the Hayes Theatre in New York City on March 31.

After years of bleaching her hair blonde, the model darkened up to get closer to her natural hue once more. "Back to dirty blonde, back to my roots ! Per @mertalas wishes ?," Hadid shared while visiting Turkey on March 25.

We almost didn't recognize the Pretty Little Liars alum when she turned up at the 2019 iHeartRadio Music Awards on March 14 with a cropped, bleach blonde 'do, a huge departure from her normal dark brown hue and long locks.

Do brunettes have more fun? Just two weeks after rocking her signature red locks at the 2019 Golden Globes, The Favourite star -- who's actually a natural blonde -- put much darker strands on display at the 30th Annual Producers Guild Awards in Beverly Hills on Jan. 19.

The Mindy Project star had fans doing a double take when he hit the 2019 Golden Globes red carpet on Jan. 6 rocking a platinum blond hairstyle. It appears the age-defying look is for one of the actor's roles. "Golden Globes ready. New hair ready to play the role of #victorzsasz in the new Harley Quinn movie #BirdsOfPrey," he shared on Instagram.