She's adorned everything from backpacks to pencil cases and jewellery, and even has a themed cafe dedicated to her in South Korea.
And now, perhaps best of all, Hello Kitty will have her very own line of covetable nail varnishes.
Launching on 6 January 2016, the Hello Kitty by OPI collection will feature 12 shades, with six being available in stores and six being available in salons.
Suzi Weiss-Fischmann, OPI Co-Founder & Brand Ambassador, says, "Together with their names, these lacquers capture Hello Kitty’s world to perfection, and of course, many of the colors also echo runway trends we’ve seen for 2016. Think delicious pinks, punchy primaries, pearly white and licorice black.”
See below for our pick of the six best shades: