Marie Claire UK
  • Fashion Fashion
      • Fashion
        • View all Fashion
        • Fashion Trends
        • Shopping
        • Watches and Jewellery
        • Fashion News
  • Beauty Beauty
      • Beauty
        • View all Beauty
        • Fragrance
        • Hair
        • Make Up
        • Skincare
        • Nails
        • Marie Claire Beauty Awards
  • Health Health
      • Health
        • View all Health
        • Fitness
        • Nutrition
        • Female Health
        • Wellbeing
  • Life Life
      • Life
        • View all Life
        • Opinions
        • Travel
        • Sustainability
        • Weddings
        • Money & Work
        • Competitions
  • Culture Culture
      • Culture
        • View all Culture
        • TV and Film
        • Celebrity News
        • Books
        • Royal News
  • Vouchers Vouchers
      • Clothing
        • View all Vouchers
        • Mint Velvet
        • Karen Millen
        • H&M
        • nobody's child
        • ASOS
        • ARKET
        • MANGO
      • Designer Clothing
        • View all Vouchers
        • Reiss
        • THE OUTNET
        • SSENSE
        • Mytheresa
        • Liberty London
        • Selfridges
        • Farfetch
      • Accessories
        • View all Vouchers
        • AllSaints
        • Aspinal of London
        • Charles & Keith
        • River Island
        • FitFlop
        • Kate Spade
        • Vagabond
      • Jewellery
        • View all Vouchers
        • Pandora
        • Abbott Lyon
        • Goldsmiths
        • Beaverbrooks
        • Astrid & Miyu
        • Swarovski
        • Angara Jewellery
      • Beauty
        • View all Vouchers
        • Sephora
        • Cult Beauty
        • Space NK
        • Dyson
        • Clarins
        • Look Fantastic
        • Clinique
      • Activewear
        • View all Vouchers
        • Lululemon
        • Gymshark
        • Sweaty Betty
        • Nike
        • adidas
        • New Balance
        • Helly Hansen
  • NEWSLETTER Signup to our newsletter
  • logoCreated with Sketch.
    Marie Claire Newsletter

    Celebrity news, beauty, fashion advice, and fascinating features, delivered straight to your inbox!


    By submitting your information you agree to the Terms & Conditions and Privacy Policy and are aged 16 or over.

    You are now subscribed

    Your newsletter sign-up was successful


    An account already exists for this email address, please log in.
    Trending
    • Latest Issue
    • Marie Claire Masters
    • Autumn Winter 2026
    • Nail Trends 2026
    • Best Investment Bags
    • Best Perfumes
    1. Style

    Sienna Miller just wore one of Kate Middleton's favourite fashion brands

    The actress was dressed like royalty.

    Grace Lindsay's avatar
    By Grace Lindsay
    Published 8 August 2022 In News

    When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

    sienna miller blue dress
    (Image credit: Getty Images Photo by David M. Benett/Dave Benett/WireImage 1242287464)
    • Facebook
    • X
    • Pinterest
    Share this article
    Join the conversation
    Follow us
    Add us as a preferred source on Google
    Subscribe to our newsletter

    The actress was dressed like royalty.

    If, like us, you love keeping up with the Duchess of Cambridge's favourite fashion brands, then you'll know that Kate Middleton is a big fan of Self-Portrait.

    In fact, the Duchess was spotted in a white Self-Portrait dress back in April, and it practically flew off the shelves. So, it's no surprise that lots of stylish celebrities have been following in the royal's footsteps and trying out the brand for themselves.

    The latest celebrity to join the hype? None other than Sienna Miller.

    That's right, the actress was just spotted wearing a light blue, knit midi dress by Self-Portrait to attend the red carpet premiere for The Sandman.

    You may like
    • Sienna Miller red jackets white jeans Sienna Miller's Easy Autumn Outfit Highlights How to Wear the Colour of the Season
    • Kaia Gerber Kaia Gerber Just Wore the ’90s Dress Style That’s as Flattering as It Is Low-Effort
    • Dakota Johnson brown cords listing Dakota Johnson’s Easy Brown Cord and Ballet Flats Look Is One I’m Bookmarking for Autumn

    sienna miller blue dress

    Getty Images Photo by David M. Benett/Dave Benett/WireImage 1242287258
    (Image credit: Getty Images Photo by David M. Benett/Dave Benett/WireImage 1242287258)

    Sienna's dress featured a statement bow-shaped bodice and fluted sleeves, and she paired it with simple white heels and a matching white shoulder bag. Perfection.

    Her exact outfit is still available to buy, and we happen to think that it would make the perfect wedding guest dress.

    Marie Claire Newsletter

    Celebrity news, beauty, fashion advice, and fascinating features, delivered straight to your inbox!

    By submitting your information you agree to the Terms & Conditions and Privacy Policy and are aged 16 or over.
    Light Blue Lurex Knit Midi Dress, £370 | Self-Portrait

    Light Blue Lurex Knit Midi Dress, £370 | Self-Portrait
    Awash in powder blue lurex knit for a metallic finish and sculpted fit, this midi dress is a photo-ready dream. Style it with nude heels on a night out in the city, or seaside cocktails on a weekend away.

    View Deal

    If you're looking for a more affordable alternative, we've rounded up some of our favourite high street versions below. Just keep on scrolling...

    Get the look: Sienna Miller's blue knit dress:

    Rib-knit Cashmere-blend Dress, was £69.99 now £50 | H&M

    Rib-knit Cashmere-blend Dress, was £69.99 now £50 | H&M
    This calf-length dress comes in a soft rib knit containing some cashmere and glittery threads. It features a round, trimmed neckline, dropped shoulders, long sleeves and a slit at one side of the hem.

    View Deal
    Wide Rib Asymmetric Neck Knit Dress, was £69 now £28 | Warehouse

    Wide Rib Asymmetric Neck Knit Dress, was £69 now £28 | Warehouse
    If you're looking for something a bit bolder, this bright blue number should do the trick. It features a flattering striped design and a slit at the hem for easy movement.

    View Deal
    Ribbed Knit Dress, was £35.99 now £12.99 | Mango

    Ribbed Knit Dress, was £35.99 now £12.99 | Mango
    With temperatures set to rise, why not go for a a sleeveless version? This Mango dress is made from a cable knit fabric with a midi design, ruched detailing in the neckline and and side ruffles.

    View Deal

    We want them all.

    Grace Lindsay
    Grace Lindsay
    Social Links Navigation
    Junior Beauty Editor

    Grace Lindsay is currently Junior Beauty Editor at Who What Wear UK and previously was Marie Claire UK's E-Commerce Writer. With over three years of experience in the fashion and beauty industry, she covers everything from the best make-up and skincare deals to how to shop the stand out trends of the season. When she's not typing away at her laptop, Grace can be found shopping her favourite vintage markets IRL, or catching up on her never-ending list of books to read.

    Read more
    Sienna Miller red jackets white jeans
    Fashion Sienna Miller's Easy Autumn Outfit Highlights How to Wear the Colour of the Season
    Kaia Gerber
    Shopping Kaia Gerber Just Wore the ’90s Dress Style That’s as Flattering as It Is Low-Effort
     
     
    Dakota Johnson brown cords listing
    Fashion Dakota Johnson’s Easy Brown Cord and Ballet Flats Look Is One I’m Bookmarking for Autumn
    Celebrity Handbags
    Shopping Everyday Handbags are Stealing the Spotlight—These are the 9 Styles Celebrities Including Rihanna and Kaia Gerber are Championing
     
     
    Latest in Style
    What Lily Loves
    Shopping These Black Leggings Are My Secret to Easy Autumn Style Plus the Celine Loafers I’ll Never Regret Buying
    collage of October fashion collaborations
    Fashion From Rixo to Burberry and M&S Lingerie, These are the Fashion Collaborations We’re Excited About Right Now
     
     
    Chloe
    Fashion Fashion Has Officially Escaped to the Country—From Kilts to Coats, These Are the Brands We’re Wearing
    Olivia Munn trench coat black trousers
    Fashion Olivia Munn’s Swing Trench Is the Rainy-Weather Layer That Adds Ladylike Polish to Every Outfit
     
     
    Latest in News
    New Beauty Launches: Burberry Beauty / Mes Beauty / rhute / Jo Loves / Ziip Beauty
    Beauty The Beauty Digest: Jennifer Lawrence’s Unexpected Haircare Launch, Burberry’s Exquisite New Perfumes and Jo Loves Sparks Festive Joy
    New Beauty Launches: Amouage, Haus Labs, XERF
    Beauty The Beauty Digest: Is XERF Worth the Hype? Plus, Amouage’s New Body Collection & The Beauty Beat Returns
     
     
    Jeans And Jackets
    Shopping Celine Dion, Daisy Edgar-Jones and Sarah Pidgeon Swear by This Trophy Jacket-and-Jeans Formula for Instant Fashion Confidence
    Vogue World Robots
    Fashion AI Is Shaping the Future of Fashion—Can Creative Thought Survive?
     
     
    logoCreated with Sketch.
    • Site Archive
    • Contact Future's experts
    • Contact us
    • Terms and conditions
    • Advertise with us
    • Privacy policy
    • Cookies policy
    • About us
    Add as a preferred source on Google Add as a preferred source on Google

    Marie Claire UK is part of Future plc, an international media group and leading digital publisher. Visit our corporate site.

    © Future Publishing Limited Quay House, The Ambury, Bath BA1 1UA. All rights reserved. England and Wales company registration number 2008885.