Sienna Miller is a defining figure of modern Hollywood—an actress who successfully transitioned from a tabloid fixture and fashion “It Girl” to a critically acclaimed performer. With a career spanning over two decades, Miller has evolved from her breakout roles in the early 2000s to delivering powerhouse performances in films like American Sniper and American Woman.
As of December 2025, Sienna Miller is experiencing a professional and personal renaissance, securing major roles in upcoming blockbusters and making headlines with her growing family. This comprehensive profile covers her biography, filmography, fashion legacy, net worth, and the latest updates on her life.
Early Life and Background
Born Sienna Rose Diana Miller on December 28, 1981, in New York City, she holds dual British and American citizenship. Her family moved to London when she was just 18 months old, where she was raised in Chelsea.
- Parents: Her father, Edwin Miller, was an American banker turned art dealer, and her mother, Josephine Miller, was a South African-born model who later managed the Lee Strasberg Theatre and Film Institute in London.
- Education: Miller attended the boarding school Heathfield School in Ascot, Berkshire, where she was known for her rebellious streak.
- Training: Determined to act, she returned to New York City after graduation to study at the prestigious Lee Strasberg Theatre and Film Institute, laying the groundwork for her method-influenced acting style.
Breakthrough Roles and Career Journey
Sienna Miller’s career is a story of resilience and reinvention. Her journey from commercial star to indie darling showcases her range.
2004–2008: The Breakout Years
Miller exploded onto the scene in 2004 with two high-profile roles:
- Layer Cake (2004): She played the love interest in Matthew Vaughn’s slick crime thriller, holding her own against Daniel Craig.
- Alfie (2004): Starring opposite Jude Law, this role catapulted her to international fame, though her off-screen relationship with Law often overshadowed her work.
- Factory Girl (2006): Miller silenced many critics with her portrayal of Edie Sedgwick, Andy Warhol’s muse. Despite the film’s mixed reviews, her performance was praised for capturing Sedgwick’s fragility and charisma.
2012–2019: The “Siennaissance”
After a brief hiatus due to intense media scrutiny, Miller returned with a focus on prestige directors and character-driven roles.
- The Girl (2012): Her portrayal of Tippi Hedren in this HBO film earned her a Golden Globe nomination and a BAFTA TV nomination, marking a turning point in her critical reception.
- Foxcatcher (2014) & American Sniper (2014): Appearing in two Oscar-nominated films in the same year, Miller proved her ability to bring depth to supporting roles.
- American Woman (2018): Widely considered her career-best performance, Miller played a working-class mother raising her grandson after her daughter’s disappearance. The role garnered rave reviews for her grit and emotional rawness.
Sienna Miller: A Modern Fashion & Cultural Icon
Before she was widely respected as an actress, Sienna Miller was a global style authority. In the mid-2000s, she single-handedly popularized the “Boho-Chic” trend.
- Signature Style: Characterized by coin belts, gypsy skirts, Ugg boots, and floppy hats, her Glastonbury Festival looks defined an era of British fashion.
- Twenty8Twelve: In 2007, she launched the fashion label Twenty8Twelve with her sister, Savannah Miller. Although they stepped down as co-creative directors in 2012, the brand was a commercial success during their tenure.
- Endorsements: Miller has been the face of major luxury campaigns, including Hugo Boss, Burberry, and Gucci. In recent years, she has served as a brand ambassador for Marks & Spencer, solidifying her appeal to the modern British woman.
Personal Life, Relationships & Motherhood
Sienna Miller’s personal life has often been public, but in recent years, she has managed to keep her family life more private and grounded.
Relationships
- Jude Law: Her on-off engagement with actor Jude Law in the mid-2000s was heavily publicized.
- Tom Sturridge: She was in a long-term relationship with actor Tom Sturridge from 2011 to 2015. They remain close friends and dedicated co-parents.
- Oli Green: Since 2022, Miller has been in a relationship with actor and model Oli Green.
Motherhood
Miller is a devoted mother who has spoken openly about the joys and anxieties of raising children, particularly regarding age and biology.
- Marlowe Ottoline Layng Sturridge: Born in July 2012 (with Tom Sturridge).
- Second Daughter: She welcomed her second child, a daughter, with Oli Green in January 2024.
- Third Pregnancy: In December 2025, Miller confirmed she is expecting her third child (her second with Green).
Latest News: Projects in 2024–2025
As of late 2025, Sienna Miller is dominating headlines for both her professional slate and personal announcements.
1. Pregnancy Reveal at 2025 Fashion Awards
On December 1, 2025, Sienna Miller made a stunning appearance at the Fashion Awards in London. Wearing a sheer white Givenchy gown from the Spring/Summer 2026 collection, she publicly debuted her baby bump, confirming she is expecting her third child. The “hard launch” was a viral fashion moment, reminiscent of her bold maternity style from previous years.
2. Casting in “Madden”
Miller has been cast in David O. Russell’s highly anticipated sports drama “Madden”. She joins an A-list ensemble including Nicolas Cage (playing John Madden) and Christian Bale. Miller is set to play Carol Davis, the wife of Raiders owner Al Davis, marking her return to working with high-profile auteurs.
3. Horizon: An American Saga
Miller stars in Kevin Costner’s ambitious four-part western epic, “Horizon: An American Saga.” Her performance in Chapter 1 was noted for its resilience. While Chapter 2 faced distribution delays in the US, it premiered at the Venice Film Festival in late 2024 and remains a key part of her current filmography.
Net Worth & Business Ventures
Sienna Miller’s wealth comes from a combination of consistent acting work, high-value modeling contracts, and real estate investments.
- Estimated Net Worth: $18 million – $25 million
- Primary Income Sources:
- Film Salaries: Earnings from major studio films like G.I. Joe: The Rise of Cobra and American Sniper.
- TV Deals: Lucrative contracts for streaming series like Netflix’s Anatomy of a Scandal and Apple TV+’s Extrapolations.
- Fashion Partnerships: Multi-million dollar campaigns with brands like Marks & Spencer and La Mer.
- Real Estate: Miller owns a historic 16th-century thatched-roof cottage in Buckinghamshire, which was featured in Architectural Digest, and has held property in New York’s West Village.
Awards & Critical Recognition
Despite being snubbed by the Oscars, Miller has received significant industry recognition:
- Golden Globe Awards: Nominated for Best Actress (Miniseries/TV Film) for The Girl (2013).
- BAFTA TV Awards: Nominated for Best Actress for The Girl (2013).
- BAFTA Film Awards: Nominated for the Rising Star Award (2008).
- ShoWest Awards: Won Best Supporting Actress for The Edge of Love (2009).
Frequently Asked Questions (FAQs)
1. How old is Sienna Miller?
Sienna Miller is 43 years old. She was born on December 28, 1981.
2. Who is Sienna Miller’s husband or partner?
Sienna Miller is not married, but she is currently in a committed relationship with Oli Green, a British actor and model. They have been together since 2022.
3. How many children does Sienna Miller have?
As of December 2025, Sienna Miller has two daughters and is pregnant with her third child. Her eldest is Marlowe (born 2012), and her second daughter was born in January 2024.
4. What are Sienna Miller’s most famous movies?
She is best known for American Sniper, The Girl, Factory Girl, Layer Cake, and Stardust. Recently, she gained global acclaim for the Netflix series Anatomy of a Scandal.
5. Did Sienna Miller win an Oscar for American Sniper?
No, Sienna Miller was not nominated for an Oscar for American Sniper, although the film itself received a Best Picture nomination. Critics praised her performance as Taya Kyle for bringing emotional weight to the film.
6. Is Sienna Miller British or American?
She is both. She was born in New York (making her American) but raised in London from the age of one (making her British). She speaks with a British accent but holds dual citizenship.
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