People.com Lifestyle Style The 10 Most Shocking Celebrity Hair Changes of 2018 These stars made the most major mane switch-ups this year By Kaitlyn Frey Kaitlyn Frey Instagram Twitter Assistant Style & Beauty Editor, PEOPLE People Editorial Guidelines Published on December 11, 2018 01:33 PM Share Tweet Pin Email 01 of 10 KYLIE JENNER Kylie Jenner instagram (2) Kylie's famous for switching up her hair color temporarily with the help of really realistic wigs. But at her 21st birthday bash in Aug., the star debuted a new golden blonde look that was actually her real hair. 02 of 10 ARIANA GRANDE Kevin Mazur/WireImage; Ariana Grande/Instagram The pop star left us wondering if she was saying “Thank U, Next” to her signature long hair when she posted a selfie with a chestnut, shoulder-grazing bob in Nov. 03 of 10 KIM KARDASHIAN WEST Getty (2) After six months of living the platinum blonde life, Kim was so "over" her icy look and dyed her hair pink in Feb. -- but she didn't rock this hue for long. The star went back to her natural brunette roots two weeks later. 04 of 10 JULIANNE HOUGH Shutterstock; Getty Julianne added a little extra flair to her stylish bob by debuting some fun fringe on the red carpet in Sept. 05 of 10 CHRISSY TEIGEN Emma McIntyre/Getty; JC Olivera/WireImage Chrissy's husband John Legend took center stage at the Creative Arts Emmys for his historic EGOT win, but we couldn't help but notice the cookbook author's chic new bob cut she debuted at the event too in Sept. 06 of 10 HILARY DUFF Getty; Hilary Duff/Instagram New mom, new look! One month after giving birth to her daughter Banks Violet, Hilary transformed her golden blonde hue into an "icy" platinum color in Nov. “She’s never been platinum before, and she loves change. This winter white compliments her skin tone and she looks stunning with that baby glow!” her colorist Riawana Capri told PEOPLE. 07 of 10 ELLE FANNING Getty; Elle Fanning/Instagram Buh-bye, blondie! Elle ditched her light hair for a fun new "princess bubblegum" pink color in Aug. 08 of 10 LEIGHTEN MEESTER Getty; INSTAR The Gossip Girl star ditched her natural dark brunette hair and went for '60s, Jean Mansfield vibes when she bleached her hair platinum in April. 09 of 10 KATY PERRY Paul Kane/WireImage; Neilson Barnard/Getty The pop star's never afraid to go bold with her hair color, and this switch-up from Sept. was no different. Katy turned to stylist Rick Henry to take her from icy blonde to lime green. "I pre-lightened her hair to a very light blonde, then applied neon green. After letting it process for 20 minutes, I rinsed and was done!" Henry told PEOPLE. 10 of 10 ROSE BYRNE Larry Busacca/Getty; Dominik Bindl/Getty Rose looked almost unrecognizable when she stepped out with platinum blonde hair and deep roots in Oct.