Billie Eilish’s ever-evolving hair colour has had a career trajectory of its own. We take a look at some of her coolest hair colours!

. Billie’s last red-hot hair colour is our most favourite pick.

Silver has become a rather popular choice in pop-culture. Billie right here, aced the look.

Billie's electric blue hair was iconic and we're all here for this vibrant hue!

Remember when the singer broke the internet with her classic blonde dye job?

Finally, here is a throwback to the singer's classic neon green locks!