It's November 1st (yep, already!), which means Mariah Carey has officially defrosted... *Queues Christmas playlist*. However, before we jump straight into the festive content – though, trust me, I'm itching to – we're still reeling off of this year's celebrity Halloween costumes. By that we mean, we cannot stop looking at Hailey Bieber's dark hair transformation.
ICYMI, Ariana Grande debuted an iconic Gerry Fleck makeover, Kylie Jenner gave us Bride of Frankenstein and Kourtney Kardashian even shaved off her eyebrows. But that's not all, because one of our fave hair looks came from Mrs Bieber.
Earlier this year, the model switched out her signature blonde hair colour for a full-blown brunette look but now, she's gone even darker with an intense shade of midnight black.
Less than 24 hours ago, Hails took to Instagram to show off her spooky 'Versace vampire' attire and whilst we adore the belted 'fit, purple glitter eyeshadow, fangs and dash of fake blood (OK, we love it all), what completely transforms the look is the hair.
She looks completely different, right?!
Now, as ever, we have to acknowledge that this may be (read: is 99.9% ) a wig. I mean, just take a glance at Hailey's Story and you'll see her with her everyday mocha chocolate hair colour. Though, wig or not, that doesn't take away from the fact that she absolutely ✨served✨.
Everyone's clicking on...
To no surprise, just like us, Hailey's followers are loving this look too and as always, shared their thoughts in the comments section of her post:
"Hailey with dark hair >>>"
"KILLED IT 🔥🔥🔥🔥"
"Pls dye your hair dark !!"
"That dark hair 😍 I am loving it!💋"
"Another spooky day another SLAY"
"She did not come to playyy this year!"
If only she made the colour permanent... c'mon Hails, give the fans what they want!
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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 She is passionate about challenging outdated beauty stereotypes, championing inclusive representation in beauty, and educating readers on the trends, products and conversations shaping the industry today.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.
