I know, I know, it's hard to believe, but after teasing on her Instagram stories earlier about a color change, she's now made her blonde reveal.
In a head flip that's worthy of a double-tap from Kim Kardashian herself, Billie shared her new sandy blonde hue with the world and we immediately got obsessed.
Not only has Billie left her green roots behind her, she's also added some seriously shaggy layers. Intentional, or the result of her accidental mullet? We're not entirely sure, but all we know is we're driving to the mall to buy a pair of hairdressing scissors. Don't even try and stop us. (Except, maybe do try because we actually don't have the skills to carry out this kind of DIY cut ourselves.)
Clearly, we're not the only ones feeling her new look because Billie posted her big reveal with the caption, "pinch me." Oh, and before you question it, we're 99.9 percent sure this isn't a wig, okay.
Seems like a lot of people will be updating their Billie Eilish cosplay looks tonight. Actually, come to think of it, what do celebrity lookalikes do when their bread and butter undergo a major hair transformation?
Either way, suddenly our hair feels incredibly boring.
This article originally appeared on Cosmopolitan.com/uk. Minor edits have been made by the Cosmo.ph editors.