We’ve Got The Intel On Sienna Miller’s Exact Boho Blonde Hair Colour And It’s Perfect For Autumn

Plus, her complete hair evolution in pictures.

Sienna miller hair

by Rachael Martin |
Updated on

Whether you're a bronde, blonde or brunette, looking for pixie-crop inspiration or fringe ideas, or it you're simply on the hunt for hair inspiration pictures, we're guessing Sienna Miller will have made your list. Miller's trademark style? Think relaxed and bohemian - she is the queen of artful tousling. But that's not to say she doesn't mix it up with the odd polished look or two. And while the actress often errs of the golden blonde side of life, the beauty icon has just revealed a different iteration of the hue - 'boho blonde', thanks to Harriet Muldoon at Larry King.

'Sienna is embracing bright creamy Scandi tones this season,' says Muldoon, a blonde expert who has created similar hues for Kate Hudson. 'I created contrast at the base by working with Sienna's natural base and scattering the highlights and allowing some room for depth. Adding in a Scandi hair line and backwash balayage gave the face frame centre stage with softness in the crown. My new technique is skinny lights; think highlights on a diet!'

Sienna Miller
Sienna Miller © Chistophe Aubert via Bestimage

Muldoon and Miller took inspiration from the late 2000’s where finer weaves and a soft natural 'It Girl' boho blonde reigned supreme. The result is a soft and seamless look, which is perfect for the turn of the season. In fact, Muldoon says, 'as we step into autumn it’s nice to have softness at the base but stand out blonde around the edges and frame.'

If you're looking to recreate the look Muldoon advises asking your stylist for 'skinny lights with a fine weave that gives a softer finish,' that way the re-growth is easier to maintain, too. You'll also want to make sure the hairline stands out, 'it's the best way to contour the blonde,' adds Muldoon.

We're also privy to Miller’s haircare product of choice thanks to celebrity hairdresser Sam McKnight. Taking to Instagram, the stylist (who once counted Princess Diana as a client) shared a video of himself prepping the star's hair with a hefty dose of his iconic Cool Girl Texture Mist. Those who love an effortless, undone wave will likely already be familiar with the stuff. It's well known for its ability to give volume, grit, and touchable movement to hair with minimal effort - think spritz, scrunch, and go. To maintain healthy blonde hair, Muldoon recommends Larry King Haircare's Good Life Shampoo, £18, for moisture and the City Life Shampoo, £18, for keeping your blonde bright.

Shop: Sienna Miller's Favourite Hair Product

Did we mention the delicious scent? Created by top perfumer Lyn Harris, expect a heady blend of florals and spices that will gently disperse every time the wind blows. Described as 'Sam's styling prowess in your pocket,' there's no denying that this is a beauty classic. Effortless waves made simple.

If you're after more Sienna Miller hair inspiration, you've come to the right place. Sienna's not afraid to experiment with colour, having dabbled with being a brunette as well as an array of pastel colours. She's also no stranger to a more dramatic chop, having sported crops and mid-length styles over the years.

From her iconic pixie crop to her signature beachy-boho style, keep scrolling for all the Sienna Miller hair inspiration you need below…

Gallery

Sienna Miller Hair Evolution

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CREDIT: Getty

Golden Girl

Looking for a classic Sienna style? This is it. So flicky, so boho, so blonde.

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CREDIT: Getty

The Dark Side

We had totally forgotten Sienna previously went to the dark side - she looks lovely with these deep chocolatey locks.

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CREDIT: Getty

Toussled Waves

But Sienna's brunette stage didn't last long! Here's her back to her beachy-blonde best.

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CREDIT: Getty

Cropped 'do

Fancy a pixie crop? Here's Sienna's iconic Edie Sedgwick-esque do.

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CREDIT: Getty

The Classic

The ultimate Primrose Hill blowdry, these face framing layers are ultra-flattering.

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CREDIT: Getty

Fringe

We love this tousled curtain-fringe look that's both relaxed and boho.

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CREDIT: Getty

Up-do

This ultra chic 'do is a great way to style a relaxed updo.

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CREDIT: Getty

High Pony

We love this cute, mussed-up pony.

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CREDIT: Getty

Quiff

Back in 2011 Sienna loved a quiff. Not gonna lie - we're still into it.

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CREDIT: Getty

Side Part

Gen-Z might say side-parts are out but we love the severe side part and loose texture of this look.

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CREDIT: getty

Copper strands

A look that launched a hundred dye jobs: we still can't get over Sienna's rose gold hair.

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Bob

She's found her short hair stride! We adore this pink-tinged, edgy bob with loads of texture.

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CREDIT: Getty

Blondie

Sienna turned up to Wimbledon in 2021 with an icier, blonder hair hue than we've we've seen her with to date and - we won't lie - we're seriously into it.

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CREDIT: Getty

Elegant up-do

2022 Wimbledon saw Sienna revert back to honey-toned highlights.

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CREDIT: Instagram

Sienna with 'The Rachel'

In 2023 Sienna debuted the 'The Rachel' alongside the celebrity hairdresser Julien Farel. Sienna revealed a sleeker, smoother haircut that's reminiscent of 'The Rachel' - the style made famous by Jennifer Aniston in Friends. Blowdried and bouncy, Sienna's new strands are shoulder-length and shaped with with long, jaw-grazing layers - it's a look set to be screenshotted the world over.

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CREDIT: Getty

Custard Blonde

2024 was the year of Sienna's 'Custard Cream Blonde,' which has also been seen on the likes of Kate Hudson. Think a vanilla toned hue with hints of warm yellow.

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Rachael Martin is Grazia’s beauty editor. Originally from Northern Ireland, she studied English Literature at Queen’s University Belfast, before moving to London to pursue a career in magazine journalism.

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