It's the end of an era.

The multi-award winning singer Billie Eilish has left fans gob-smacked after debuting a shocking new look on Instagram. The Bad Guy singer revealed that her signature green locks are gone, in favour of a more conventional blonde colour. Billie shared her new do with her 78.2 million followers on Instagram. "Pinch me," she wrote in the accompanying caption. The photo clearly caused a reverberation among her legions of fans. The post broke a world record of the fastest time to reach one million likes. Within six minutes, Billie broke a million, smashing a record that was previously held by Selena Gomez. The photo currently has over 16 million likes, cementing its status as one of the top ten most liked posts on Instagram of all time. Billie's new blonde locks mark an end to an era. The singer's green and black hair has been her trademark since 2019, but those days are clearly over. https://www.instagram.com/p/CMhvKMvF3HR/ Eilish gave fans a better look at her new hair in her stories, with additional photos. "Blonde," she wrote over one picture. "Bye greeeen," she wrote on another. For some time now, many fans have speculated over when Billie would shake up her signature tresses. The star carefully covered her hair at the 2021 Grammy Awards on Sunday evening, and many thought a change was in the mix. Additionally, Eilish hinted at a hair change before she released her Apple documentary Billie Eilish: The World's A Little Blurry. "I'm changing it after the doc comes out," she said. "It will be the end of an era. I'm gonna give you a new era." It's been a great week for Billie on all accounts. At the Grammys, the singer cleaned up with two nominations and two wins. Billie took home the coveted Record of the Year Grammy for her track Everything I Wanted. She also picked up the Best Song Written for Visual Media award for No Time To Die. The song will appear in the upcoming James Bond film of the same name.