From sleek long, locks to a teal bowl-cut, the year of Halsey, with a 2015 Billboard cover and Billboard Hot 100 hit "Closer" with The Chainsmokers, brought a rapidly evolving hair history all its own. Click through to see all the pop-rocker's looks from just her biggest year yet.
May 2015: Halsey goes long-locked teal for her onstage performance during Boston's Calling Music Festival.
August 2015: Shaving her head but keeping a tint of green, the singer sports a sleeker, more autumnal take on her former 'do at the MTV Video Music Awards.
November 2015: Looking sophisticated in a pixie style with finger waves, Halsey somehow makes this classic cut look oh so modern at the Museum of Modern Art's 8th Annual Film Benefit.
November 2015: Having grown her girly pixie cut out into a slightly more boy-ish style, Halsey and Justin Bieber look like a match in popstar heaven.
December 2015: Bored of the blonde, the singer takes a cue from Natalie Portman a la "V for Vendetta" and shaves her head, rocking her natural brunette color just in time for Christmas in L.A.
March 2016: If Chanel's Karl Lagerfeld doesn't love this Twiggy-inspired close chop at his Paris Fashion Week Fall/Winter 2017 show, we don't know what he'll love.
June 2016: Back to her rebellious ways at the 'Roadies' TV series premiere in L.A, Halsey's signature short hair is tinted that mermaid teal only she can rock.
August 2016: Damn! We happen to think this might be Halsey's best look yet, and while we can't even imagine what her hair has gone through, we're very happy to see it back looking au naturale.