5 Seconds of Summer made a spectacular comeback with their album, CALM, earlier this year.
Ashton Irwin, Luke Hemmings, Calum Hood and Michael Clifford celebrated their enduring success on Thursday by uploading a heartfelt message to fans.
‘Hard to believe we’ve been together as a band for nearly a decade now,’ the hit-makers wrote to their official page.
‘Whether you’re a new fan or have been with us since the beginning, thank you for being a part of this incredible journey with us.’
The post was accompanied by before-and-after images of the band posing arm-in-arm.