Now, Eilish has shown us how to effortlessly take that trend to hair – and this is the advice Stylist’s very own beauty writer Hanna Ibraheem had for anyone bold enough to try this look themselves.

“Dying the roots is a good way to try it, if you’re scared to go neon all-over your head,” she explained.

“However,” she continued, “if this is a style you want to keep, you would need to be good with maintenance every time your roots grow out.”

Sure, it might be a lot of hard work, but it looks bloody great.

Image: Getty

Billie Eilish just dyed her hair the most amazing new colour and we’re here for it