Sienna Miller looked effortlessly dramatic in an avant-garde Erdem look at the New York premiere of HBO’s War at the Perelman Performing Arts Center on September 22, 2026.
The upcoming legal drama follows two prestigious London law firms, Cathcarts and Taylor Byrne, as they face off in a scandalous divorce case involving a high-profile tech entrepreneur (Dominic West) and his film star wife (Sienna Miller).
Sienna Miller pairs a sculptural black Erdem dress with white ostrich-feather detailing and black Victoria Beckham Harlow mules at HBO’s “War” New York premiere on September 22, 2026 (Credit: MediaPunch / INSTARimages)
Sculptural Black Satin: Sienna Miller’s Victoria Beckham Harlow Mules
For the premiere, Miller opted for minimalist yet striking black satin mules, letting her dramatic dress take most of the attention. Despite their simplicity, the shoes had a few eye-catching details.
She wore Victoria Beckham’s “Harlow” mules, known for their curved heels that measure about 4 inches high. The unusual heel shape gave the shoes a modern touch, while the slim strap across the toes featured a slightly dipped, V-shaped vamp. The strap was thinner in the center and widened slightly toward the sides, giving the front of the mules a soft, curved shape.
The high heels also added considerable lift to Sienna Miller’s 5 ft 5 in (165.1 cm) frame. She typically wears a US shoe size 8.5 (EU 39 / UK 6.5) and has a long history of wearing distinctive designer heels on the red carpet.
These mules feature an open-back design, while the peep toes keep the silhouette light and open. A padded insole and leather lining add comfort to the sleek design.
The Harlow also fits neatly into Miller’s preference for more architectural footwear. Just two months earlier, she wore Givenchy’s ivory Boudoir mules with oversized bows and sculpted metal heels, another backless, open-toe design built around an unconventional heel.
Miller isn’t the only celebrity to favor the Harlow. Olivia Munn wore the same Victoria Beckham Harlow mules with a pencil skirt, brown blouse, and black coat during a New York press appearance. Victoria Beckham has also worn her own black satin Harlow mules, pairing the sculptural heels with an all-white skirt suit at the 2025 premiere of her Netflix documentary.
Victoria Beckham offers the Harlow Open Toe Mule in black satin, along with other versions of the sculptural style, in the brand’s mules collection.
A close-up of Sienna Miller’s black satin Victoria Beckham Harlow mules highlights their open-toe design, curved V-shaped vamp, open backs, and sculptural high heels (Credit: Janet Mayer / INSTARimages)
Black White Drama: Sienna Miller’s Feather-Trimmed Erdem Dress
Miller paired her minimalist heels with a theatrical Erdem dress from the Spring/Summer 2027 collection. The design gave the classic LBD a much more dramatic feel, contrasting a fitted black satin bodice with oversized feathered volume.
The black satin dress had a tank-style bodice with wide shoulder straps and a straight neckline, along with subtle ruching around the bust and waist. Contouring stitch details ran down the center front, drawing attention to its fitted construction.
The satin skirt hugged Miller’s figure before rising into a thigh-grazing asymmetric hem. Beneath the skirt, thick layers of fluffy white ostrich feathers spilled outward from both sides, creating a dramatic, voluminous shape around her legs. The black satin continued into a longer back panel, giving the dress a pronounced high-low effect.
An ivory floral embellishment at one hip added another textural element to the black satin. Rather than competing with all that volume, Miller’s streamlined black mules kept the focus on Erdem’s unusual silhouette.
This styling approach has worked with other feathered Erdem designs, too. Earlier in 2026, Zendaya grounded a black-and-white, feather-trimmed Erdem look with simple Christian Louboutin So Kate pumps, similarly letting clean footwear balance the texture and volume of the clothes.
Sienna Miller’s Erdem Spring/Summer 2027 dress combines a fitted black satin mini silhouette with an asymmetric hem, voluminous white ostrich feathers, and an ivory floral embellishment at the hip (Credit: Janet Mayer / INSTARimages)
A Signature Detail: Sienna Miller’s Love of Sculptural Heels
The Harlow mules continue a footwear pattern that has appeared throughout Miller’s red-carpet wardrobe. She often chooses relatively streamlined shoes distinguished by an unusual heel, vamp, or metallic finish.
At the 2019 American Woman premiere, for example, Miller paired a shimmering Ralph Lauren gown with metallic Gucci knot sandals. Their open toes, softly twisted sculptural vamps, and tapered heels offered an earlier example of the balance between minimalism and unusual footwear detailing that she revisited with the Victoria Beckham Harlow.
Soft Finish: Sienna Miller’s Relaxed Updo, Statement Earrings Natural Makeup
Miller skipped a necklace and kept her jewelry simple with sparkling statement earrings and a few rings, leaving the dress’s straight neckline and exaggerated feather detailing unobstructed.
Her blonde hair was styled in a relaxed, loose updo, with soft tendrils framing her face. She finished the look with softly peachy cheeks, mascara, and a natural pinky-nude lip.
Sienna Miller complements her dramatic Erdem look with a relaxed blonde updo, face-framing tendrils, sparkling statement earrings, and softly understated makeup (Credit: Dave Allocca / Starpix / INSTARimages)
Miller’s Harlow heels also fit into a broader celebrity preference for black mules. The appeal is easy to understand: the backless silhouette has the polish of a heel with the ease of a slip-on, while black leather, satin, suede, and patent finishes can move from casual separates to tailoring and eveningwear without competing with the rest of the outfit.
Why Black Mules Work: From Red Carpets to Off-Duty Celebrity Style
There isn’t one formula for wearing them. Lily Collins has paired sculpted black leather mules with tailored shorts, Zoë Kravitz has worn block-heel suede mules with denim cutoffs, and Amanda Seyfried has used black satin mules to ground a crystal-fringed mini dress. On the dressier end, Camila Morrone and Michelle Monaghan show how a slim stiletto mule can sharpen lace, tailoring, and monochrome looks.
🖤 Explore Black Mules in Celebrity Style:
- ✨ Camila Morrone’s black patent Paris Texas “Lidia” mules add a sleek, barely-there counterpoint to the soft floral lace of her nude Gucci dress.
- 👠 Michelle Monaghan’s Giuseppe Zanotti “Intriigo” mules bring pointed open toes, glossy patent leather, and slim stilettos to a sculptural all-black look.
- 🖤 Camila Morrone’s Black Suede Studio “Shania” mules combine peep toes and 4-inch stilettos with a streamlined black Max Mara two-piece.
- 🎾 Lily Collins’ black Jimmy Choo “Skye” mules show the silhouette at its most relaxed, pairing a V-shaped vamp and sculpted heels with tailored shorts and a halter top.
- 👖 Zoë Kravitz’s black suede Adela mules by The Row take the look into everyday dressing with 3-inch block heels, denim cutoffs, and a lace-trimmed camisole.
- 💎 Amanda Seyfried’s black satin Miu Miu mules ground a crystal-fringed lilac mini dress, showing why a simple black mule works so well beneath more decorative fashion.