How War ’S Costume Designer Separated Sienna Miller From Her Character: ‘It Is A Bit Meta’
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War costume designer Matthew Price says he and Sienna Miller used archival fashion and contemporary pieces to make actor Carla Duval feel distinct from Miller, despite their apparent similarities. Price also describes a revenge outfit in episode two and says the wardrobe helped conceal Miller’s pregnancy during filming.

Costume designer Matthew Price says he worked with Sienna Miller to make Carla Duval’s wardrobe in HBO’s divorce drama War feel distinct from Miller’s own style, despite the character’s similarities to the actor. In an interview with ELLE, Price described using archival designer pieces, contemporary clothing and carefully selected silhouettes to shape Carla’s identity—and said the wardrobe also helped conceal Miller’s pregnancy during filming.

Carla is a British actor with Hollywood fame and a high-profile wardrobe, a profile that closely echoes aspects of Miller’s public image. Price told ELLE that the resemblance made the work feel “a bit meta,” and said he had to avoid choices that looked too much like Miller herself. A couple of Chloé items, for example, felt “a little too Sienna” when the team tried them on, he said.

Price and Miller began with a shared reference: Claire Thomson-Jonville, the fashion editor. Price said they wanted to draw on French minimalism without locking Carla into a single silhouette. The wardrobe combines pieces from designers including Fendi and Stella McCartney with more accessible labels such as & Other Stories, The Frankie Shop and Agolde. Price said the aim was to keep the clothes modern and avoid making the character’s wardrobe feel “totally unreachable.”

The team also sourced archive garments, including Dolce & Gabbana pinstripe suits, a tasselled Comme des Garçons gown and a McQueen coat from the 2000s. Price said Miller supported the archive approach and was not focused on labels if a garment fit the character. He described a paisley Chloé jacket with black leather boots in episode two as Carla’s “revenge outfit,” chosen as a less obvious expression of confidence during the divorce story.

At a glance
reportWhen: Reported in ELLE in 2026; War is descri…
The developmentAn ELLE interview with War costume designer Matthew Price details how the series’ wardrobe team built Sienna Miller’s character Carla Duval’s style to distinguish her from the actor.

How Carla’s Wardrobe Builds Character

The wardrobe is part of how War separates Carla from Miller while still making the character’s taste plausible. Because Carla is also a famous actor with a fashion-conscious public image, costume choices that simply reproduce Miller’s familiar style could blur the line between performer and role. Price’s account shows how design decisions—what to reject as too recognizably “Sienna,” and what to source from archives—were used to create that distinction.

The clothes also help communicate changes in Carla’s emotional and social position as her marriage breaks down. Price’s description of the episode-two outfit as revenge dressing offers a specific example: instead of an overtly dramatic look, the character’s response is expressed through a jacket and boots. The archive pieces give the wardrobe visual range, while the mix with contemporary and more accessible labels is intended to keep Carla’s style from feeling like a collection of costumes or an unattainable fashion display.

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The Design Behind War’s Divorce Drama

War is described in the ELLE report as an HBO divorce drama created by George Kay, the writer associated with Killing Eve. Its plot follows the divorce of Carla Duval and Morgan, a tech executive played by Dominic West. The couple’s separation provides the story’s central setting for the wardrobe’s shifts in tone and presentation.

Price told ELLE he joined the project with an interest in developing Carla’s look and that he and Miller quickly agreed on an initial reference. He said archive sourcing became important once the team began testing clothes, with collectors and fashion-history specialists helping locate items to loan or buy. The report also identifies Price’s team as numbering 30 people, though it does not provide a full account of the sourcing process or the total number of garments used.

““As she is played by an actor such as Sienna, it is a bit meta.””

— Matthew Price, costume designer, speaking to ELLE

What the Interview Leaves Open

The ELLE interview does not specify when War was filmed, how many episodes include the archive garments or exactly which scenes feature each named piece beyond the examples Price gives. It also does not describe the methods used to conceal Miller’s pregnancy, or say whether the wardrobe was the only measure involved. The report provides Price’s account of the design process, not a full production statement or independent assessment of how audiences read the costumes.

The source identifies War as a new HBO drama but does not give a release date, episode schedule or details about the show’s distribution in different markets. Those points cannot be confirmed from the interview alone.

The Series’ Wardrobe on Screen

Viewers can see how the clothing choices play out as Carla and Morgan’s divorce story progresses, including the episode-two outfit Price calls the revenge look and the Comme des Garçons gown worn later around a court scene. Price said the gown appears more than once and that he had initially questioned whether it would feel too theatrical.

The interview does not announce a separate costume exhibition, release or follow-up project. Further information about War’s schedule, its full cast and the production’s design process would need to come from HBO or additional reporting.

Key Questions

What is the news about War’s costumes?

Costume designer Matthew Price told ELLE how he and Sienna Miller developed Carla Duval’s wardrobe to distinguish the character from the actor, despite similarities in their public profiles.

What clothing appears in Carla’s wardrobe?

The report names archive pieces including Dolce & Gabbana suits, a Comme des Garçons gown and a McQueen coat, alongside contemporary items from designers and retailers including Fendi, Stella McCartney, & Other Stories, The Frankie Shop and Agolde.

Which outfit does Price call Carla’s revenge look?

Price identifies a paisley Chloé jacket and black leather boots in episode two as the character’s revenge outfit.

How did the wardrobe team account for Miller’s pregnancy?

Price said the team faced the challenge of hiding Miller’s pregnancy while staying true to Carla’s character. The interview does not detail the specific clothing techniques they used.

Source: rss

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