Sienna Miller Bio
Sienna Rose Diana Miller (born 28 December 1981) is an American-British actress and former model known for her eclectic work across film, television, and stage. Born in New York City and raised in London, she first gained attention as a model before establishing herself on screen with layered performances in Layer Cake (2004) and Alfie (2004). Across two decades she has moved comfortably between independent dramas, prestige pictures, mainstream blockbusters, and stage revivals, earning recognition from BAFTA and the Golden Globes along the way.
Her filmography spans biographical dramas such as Factory Girl and Foxcatcher, the war epic American Sniper, the adventure The Lost City of Z, and limited series including The Loudest Voice and Anatomy of a Scandal. Off-screen, Miller has built parallel careers in fashion, charity work, and theatre, shaping a distinctive public persona in contemporary cinema.
Early Life and Background
Sienna Rose Diana Miller was born on 28 December 1981 in New York City. Her mother went into labor while watching a performance of The Nutcracker in New York, narrowly avoiding a theatrical birthplace. When Sienna was around 18 months old, the family relocated to London, where she spent the rest of her childhood.
Miller attended Heathfield School in Ascot, Berkshire. Her father, Edwin Miller, worked as a banker before becoming a dealer in Chinese art, while her mother, Josephine, a British former model born in South Africa, had worked as a personal assistant to David Bowie and once managed the Lee Strasberg Theatre and Film Institute in New York. The household blended finance, the arts, and creative lineage, giving Miller an early immersion in performance and storytelling.
Path to Acting
Before stepping in front of the camera, Miller worked as a photography model. She signed with Tandy Anderson of Select Model Management London and appeared in campaigns for Coca-Cola, Italian Vogue, and the 2003 Pirelli Calendar. Cover shoots followed for Vogue’s American, British, Australian, and Portuguese editions, as well as fashion titles such as Nylon, Marie Claire, and Porter Edit.
Her screen debut came with the romantic comedy South Kensington (2001), opposite Rupert Everett and Elle Macpherson. Early supporting work included High Speed (2002), The Ride (2002), and guest spots on The American Embassy and Bedtime, followed by a regular role as a combative flatmate on the New York-set television drama Keen Eddie (2003). Though Keen Eddie was cancelled after seven episodes, it gave Miller her first sustained exposure to American audiences.
Sienna Miller Career
Early Career (2001–2003)
Between 2001 and 2003, Miller laid the groundwork for a screen career while balancing her modeling profile. South Kensington introduced her to film sets, while her small-screen arc on Keen Eddie gave her a foothold in television and a reason to spend time in the United States.
She used the period to refine her craft, picking up stage work and smaller film roles that allowed her to learn on the job. These formative years translated into the higher profile that arrived with her 2004 breakthrough.
Breakthrough (2004–2008)
With roles in two commercial films and a higher public profile due to her relationship with actor Jude Law, 2004 marked a turning point. In the crime thriller Layer Cake, directed by Matthew Vaughn and starring Daniel Craig, Miller played the love interest of a London-based cocaine supplier. In Alfie, the remake of Bill Naughton’s 1966 film, she appeared opposite Jude Law as the girlfriend of a cockney limo driver. Both films cemented her on-screen presence and earned her tabloid stature as an It Girl.
Miller continued her ascent with the 2005 period dramedy Casanova, in which she played a writer of illegal feminist books opposite Heath Ledger, and made her West End debut in a revival of As You Like It at the Wyndhams Theatre. In 2006, she portrayed 1960s socialite and Andy Warhol muse Edie Sedgwick in the biographical drama Factory Girl, drawing strong reviews for her committed performance. She followed it with roles in Stardust (2007), Interview (2007), The Mysteries of Pittsburgh (2008), and The Edge of Love (2008), in which she starred alongside Keira Knightley as Caitlin Macnamara, the wife of poet Dylan Thomas. Her work in The Edge of Love earned a British Independent Film Award nomination for Best Supporting Actress.
Breakthrough (2009–2011)
In 2009, Miller was cast as The Baroness in G.I. Joe: The Rise of Cobra, her first major studio blockbuster, and the role made her a familiar face in global franchise filmmaking. Critical reception was mixed, but the film earned $302.5 million worldwide. After this high-visibility outing, she stepped back from film for roughly two years to focus on theatre.
She played the title role in Patrick Marber’s After Miss Julie on Broadway in 2009, and in 2011 starred as a former starlet caught in a love triangle in Trevor Nunn’s production of Flare Path at London’s Theatre Royal Haymarket. The stage work refreshed her reputation as a performer beyond her tabloid image.
Breakthrough (2012–2017)
Miller returned to prominence in 2012 with The Girl, an HBO and BBC film in which she portrayed actress Tippi Hedren, the muse of director Alfred Hitchcock. Her performance earned nominations for the BAFTA Television Award for Best Actress and the Golden Globe Award for Best Actress in a Miniseries or Television Film.
She went on to appear in Bennett Miller’s Foxcatcher (2014), playing Nancy Schultz, the wife of murdered Olympic wrestler Dave Schultz, and Clint Eastwood’s American Sniper (2014), in which she played Taya Renae Kyle, the wife of U.S. Navy SEAL sniper Chris Kyle. American Sniper became the highest-grossing war film of all time. In 2015, she took on roles in Mississippi Grind, Unfinished Business, High-Rise, and Burnt, while also stepping into the role of Sally Bowles in the Broadway revival of Cabaret for its final six weeks. Her 2016 work included The Lost City of Z and Ben Affleck’s Live by Night, and in 2017 she starred in The Private Life of a Modern Woman, which screened out of competition at the 74th Venice International Film Festival, and appeared in a West End production of Cat on a Hot Tin Roof.
Notable Works and Milestones
Miller’s signature works include Layer Cake, Alfie, Factory Girl, G.I. Joe: The Rise of Cobra, Foxcatcher, American Sniper, and The Lost City of Z, alongside television standouts The Girl, The Loudest Voice, and Anatomy of a Scandal. She earned a BAFTA Rising Star Award nomination in 2008 and, four years later, BAFTA Television and Golden Globe nominations for The Girl, marking her most decorated period to date.
Recent and Ongoing Work (Since 2018)
In 2018, Miller starred in The Catcher Was a Spy and in American Woman, the latter drawing some of the strongest reviews of her career and giving her first leading role unbolstered by an ensemble. She followed it with the 2019 action film 21 Bridges opposite Chadwick Boseman and the Showtime miniseries The Loudest Voice, in which she portrayed Beth Ailes, wife of television executive Roger Ailes. In 2022, she appeared in the Netflix limited series Anatomy of a Scandal, and in February 2024 she joined the short film Marion as an executive producer.
Sienna Miller Award Nominations
Across her career, Sienna Rose Diana Miller has earned nominations from BAFTA, the Golden Globes, and the British Independent Film Awards. She received a BAFTA Rising Star Award nomination in 2008, followed by BAFTA Television Award for Best Actress and Golden Globe Award for Best Actress in a Miniseries or Television Film nominations for her portrayal of Tippi Hedren in The Girl (2012). She has also earned British Independent Film Award nominations for Best Supporting Actress for The Edge of Love (2008) and High-Rise (2015).
Sienna Miller Awards Won
Sienna Rose Diana Miller has yet to secure a major individual acting award at the highest tiers, though her nominations from BAFTA, the Golden Globes, and the British Independent Film Awards reflect sustained recognition. Her career-defining recognition has come from critics, peers, and audiences, who have repeatedly praised her range across independent, prestige, and mainstream work.
Sienna Miller Family
Sienna Rose Diana Miller is the daughter of Edwin Miller, an American banker turned Chinese art dealer, and Josephine Miller, a British former model born in South Africa who once managed the Lee Strasberg Theatre and Film Institute in New York. Her sister, Savannah Miller, is a fashion designer who co-founded the Twenty8Twelve label with Sienna in 2007.
Personal Life
Miller became engaged to her Alfie co-star Jude Law on Christmas Day 2004; the couple separated in November 2006 after a highly publicised tabloid period. She later dated actor Tom Sturridge from 2011 to 2015, with whom she has a daughter born on 7 July 2012. Since late 2021, she has been in a relationship with actor Oli Green, with whom she welcomed another daughter in December 2023. The couple were seen together at the Oasis concert at Wembley Stadium in July 2025.