Now she's debuted her most daring hairstyle yet - and no, she hasn't ditched her signature high pony.
Celebrity hairstylist Chris Appleton posted a series of photos revealing Ari's lightened locks, in a shade he described as 'icy blue'.
Ari's dye job was done for her new Reebok campaign, which she stars in with babes Gigi Hadid and Gal Gadot.
At first, it looked like she might have gone back to her platinum blonde Sweetener look, but the new snaps show she has YET AGAIN pulled off an impossible hair colour.
Throughout her career, Ari's hair has been as much a part of her identity as that killer voice.
In a recent interview, she joked her hair might even be the source of 'telepathic connection' between her and her fans.
Srsly, is there anything this girl can't do?
WE. ARE. OBSESSED!