With her jet black-meets-midnight blue head of hair, there's no guessing Billie Eilish's natural colour. Did she walk out of the womb cosplaying a punk rock star or are her homegrown locks of another breed? Well, we've got the tea and we're here to spill it...
Thanks to a series of baby photos shared on the singer's Instagram Stories over the last months, we now know that Billie is a natural blonde – who knew?! And the peroxide tone couldn't be more different from her current look... So much so, that I'd go as far as to say that she looks pretty unrecognisable.
Fronting the star's most recent Instagram dump is the cutest fair-haired baby you ever did see:
She looks adorable! And *so* blonde!
Not only that a few months ago, while also announcing that she was the 'mystery artist' on the Barbie movie soundtrack, Billie reminisced on her childhood with the following snaps:
And for good measure (read: if the above evidence didn't quite fulfil), prior to the above posts, the singer shared the following:
Everyone's clicking on...
As we can see from the above at an early age, Billie was rocking a warm honey-blonde hue.
Reminiscing aside, we cannot wait to see what Billie does next with her hair. Perhaps she'll have a side sweeping noughties bang cut into her tresses just like the one her toddler self had? One can only dream...
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Lia Mappoura (she/her) is the Beauty Writer at Cosmopolitan UK, with over four years of experience reporting across the brand's print, social, video and digital platforms. Lia covers everything from emerging trend analysis to viral celebrity hair and makeup moments, making her an expert at spotting the season’s next big beauty look (before it takes over social media feeds).
In 2025, she was named The Rising Media Star at the Love Perfume Awards with The Perfume Shop, recognised for her outstanding digital fragrance content and for building genuine authority within the space. She is passionate about challenging outdated beauty stereotypes, championing inclusive representation in beauty, and educating readers on the trends, products and conversations shaping the industry today. Follow her on Instagram or find her on LinkedIn.
