We've been hooked on Sienna Miller's style for some time now. Of course, there was the boho phase of the '00s, and we all yearned to look good in a low-slung belt and Western boots with the dishevelled glamour only Sienna and Kate Moss could really master. But as we've grown (and stepped away from questionable accessories), so has Miller's own aesthetic. We think she could make almost anything look good.
Coined the "Sienna-ssance" by one of our editors, the past few years have catapulted the star's wardrobe back to the top of our most-wanted lists, thanks to an incredible mix of off-beat red carpet glamour and über-polished weekend wardrobing.
When it comes to perfecting the art of the smart-casual, ever-elusive notion, Sienna nails it every single time. A little white dress? Paper-bag waist trousers? Summer dresses paired with patent brogues? Red-hot leathers? It seems the actress can pull off anything. So naturally, we've set about breaking down the secrets that power her knockout wardrobe. Keep scrolling to see some of Sienna Miller's very best outfits and the style tricks she swears by.
Style Notes: At a LACMA event at the beginning of November, Sienna wowed in this incredible floor-length sequinned gown. Of late, she's been spotted wearing a lot of suits, but once again, she proved why she's always one of our favourite celebrities on the red carpet.
Style Notes: As I mentioned, Sienna is quite the fan of tailoring right now. This muted tone version is made all the more cool with the addition of black sunnies and vest top.
Style Notes: Another winning suit from Sienna. This pinstripe is made much less corporate thanks to the burgundy rather than office blue colour.
Style Notes: At Wimbledon this summer, Sienna opted for one of the biggest colour trends of the year: beige. She paired her suit with strappy heels.
Style Notes: Clearly, this is the summer of suits for Sienna, as she was also spotted out wearing a green version too. This time she wore it with a white T-shirt and flats.
Style Notes: Once again, Sienna proved that she's not just adept at dressing for the red carpet or big social events. She also knows how to keep it cool and casual with wide-leg jeans, a cropped jumper and Stan Smith trainers.
Style Notes: One of our favourite looks is this homage to the '60s. The shift dress paired with low wedges is modernised with her softly curled hair and barely-there makeup.
Style Notes: Is there anything we love more than seeing Sienna wearing a bold and fun dress? This gold frock is pure disco perfection.
Style Notes: At the 2019 Met Gala, Miller wore a silver sleeved metal Paco Rabanne dress with black mules and a mini black bag.
Style Notes: We can all get stuck in a denim rut from time-to-time, so change up your casual ensembles with a checked midi dress and biker boots.
Style Notes: Fashion might be obsessed with thin-strap sandals this season, but Sienna proves chunky platforms can look just as cool and sexy, especially when paired with black trousers a red lip.
Related: Summer 2019 Fashion Trends: Looks You Need to Know
Slip dresses are still high on the sartorial agenda for party season 2018 though, as Sienna demonstrates, they can look just as sleek worn in daylight hours, too. Just add a cosy borg jacket and edgy flats.
Style Notes: The Dad trend that Sienna is into is chunky cricket jumpers — which she paired with a pair of ankle-grazing trousers and black mules.
Style Notes: Sienna wore three different checks at once, proving that print clashing isn't as scary as you might think.
Style Notes: A sheer dress in clashing prints, big kickers, jewel choker and bright heels—it shouldn't work, but somehow it does. The key to achieving Sienna's eclectic look is to anchor your outfit with subtle hits of black, as evidenced by her necklace and frock panel. Masterful as ever.
Related: Summer 2019 Fashion Trends: Looks You Need to Know
Style Notes: If you're suck in a denim rut, try switching out your jeans for a pair of checked strides.
Style Notes: Sienna wore a Sonia Rykiel maxi gown with pleats on the skirt and flared sleeves, proving that a sheer gown can be elegant.
Style Notes: At a New York event in June last year, Sienna wore an orange silky floral midi dress with a pair of gold strappy stilettos.
Style Notes: As gorgeous as her peach, drop-waist dress may be, what really makes Sienna's soirée attire stand out is her excellent choice of accessories. The red half-moon clutch and monochrome Louis Vuitton shoes allow her kooky personality to shine through.
Style Notes: Sienna wore a pair of leopard-print leggings with a faded mustard yellow sweatshirt. She paired the comfy look with a red handbag and a pair of Birkenstock flip-flops. This sounds like a combination that would never work, but somehow, Sienna makes it look cool.
Style Notes: It might not be one of her bolder choices but thanks to the off-the-shoulder dress and the strappy black heels, this outfit really delivers a punch.
Related: Zara Just Dropped So Many Autumn Boots—These Are the 17 We Rate
Style Notes: At a polo event, Sienna wore a white dress with lace sleeves and a Jane Birkin–esque basket bag.
Style Notes: This is one of the best looks we’ve seen in some time: an orange silk floor-sweeping slip dress designed by her sister Savannah Miller. Miller paired it with a clashing peach-coloured clutch bag and a gold chain necklace.
Style Notes: A good pair of jeans can take you anywhere. Case in point? Sienna’s high-rise flares at the Louis Vuitton Paris Fashion Week show. Luckily, we’ve found a similar pair by M.i.h Jeans.
Style Notes: Yes, the LBD is a longtime wardrobe staple, but come the summer months, we’d argue an LWD (little white dress) is just as essential.
Related: 10 Types of Boots We're All Going to Be Wearing This Season
Style Notes: When it’s brightening up and you’re ready to ditch the tights (but there’s still a lingering chill in the air), colourful knits and crochet details are the answer, as Sienna Miller in Céline stripes more than proves.
Style Notes: If you can’t wear an outrageously colourful frock in the sunshine, when can you? Cue Sienna in bright and bold Dolce & Gabbana.
Style Notes: She may be a boho devotee at heart, but even Sienna can’t resist the structural allure of a Céline jumpsuit layered over a little leather.
Related: Don't Even Talk to Me About Any Other Shoes Besides These
Style Notes: If there’s one thing Sienna Miller knows, it’s the art of accessorising. Jeans and a parka topped with a beanie sounds—on paper—incredibly low-key. But with the right printed beanie, a well-chosen Mansur Gavriel bucket bag and tan ankle boots, everything else is elevated.
Style Notes: This military-inspired Burberry coat is the perfect example of how tailored outerwear can add just enough edge to a glitzy party frock.
Style Notes: When in doubt, even Sienna looks to French fashion icons for outfit inspiration, like this floral-print jumpsuit from Jeanne Damas’s label, Rouje.
Style Notes: On holiday in St Tropez, Sienna wore the chicest beach outfit we’ve seen in some time. She wore a Dolce & Gabbana leaf-print little cropped top and shorts co-ord set. Although this exact set is now unavailable, there are similar cotton shorts by Dolce & Gabbana available in a butterfly print and a rose print.
Style Notes: No longer reserved for coats, a camel jumper is easily the chicest knit you can own. Particularly when it's paired with a tweed or checked midi skirt.
Style Notes: Black tights are often given a bad rep but Sienna ensures hers look anything but drab by pairing them with her signature platform sandals, a midi dress and pouch bag for a night out.
Style Notes: Sienna makes a white T-shirt and jeans look more interesting with a bright red top handle bag.
Style Notes: Sienna always leans on her red Gucci loafers to pull together a simple ripped-jeans outfit.
Style Notes: At the Louis Vuitton show, Sienna wore a leopard roll-neck with a black leather miniskirt and strappy heels.
Style Notes: Sienna arrived at another Louis Vuitton show wearing a checked belted coat with a top-handle vanity case handbag.
Style Notes: We love how Sienna wore a pair of yellow pumps to match her pink-and-yellow Vampire's Wife dress.
Style Notes: One of the easiest ways to create an impactful outfit is with your colour palette, and Sienna knows red and black is a fast-track to cool. Add leather accessories to enhance the edgy vibe.
Style Notes: Never afraid to push her style boundaries, make like Sienna and embrace new silhouettes with confidence. We guarantee it'll be worth the risk.
Next up, the biggest autumn/winter 2019 trends you need to know.
Opening Image: Getty
This story was published at an earlier time and has since been updated.
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Sienna Miller Just Wore the Affordable Trainer Brand You Probably Haven't Heard Of YetOne to watch.
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Sienna Miller Just Wore the Boot Trend I Bought From ASOS This WeekWe're so similar.
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Lila Moss, Zoë Kravitz and Sienna Miller Have Set a New Jacket-and-Jeans Formula This WinterClick for inspiration.
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I'm Shocked—Both Sienna Miller and Jennifer Lopez Just Wore the Denim Trend I Haven't Reached for in YearsI think it's time for a revival.
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Sienna Miller’s Boots Could Be Called "Dated", But Her Jeans Are So 2025An outfit she wore whilst hanging out with J.Law!
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Sienna Miller Just Wore the Colour That Will Dominate 2025 with Winter’s Most Elegant Boot TrendAn expertly crafted look.
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Sienna Miller's Winter Capsule Wardrobe Revolves Around These 7 Easy-to-Replicate PiecesLessons from the A-list.
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Sienna Miller Wore the Winter Bag Trend Kate Moss Also Uses to Make Her Outfits More MemorableActually, so many celebs do this.
