Sienna Miller is a British-American actress, model, and fashion icon widely praised for her work in film, television, and theatre. Known for her versatile performances and trend-setting style, she has built a long-standing career that spans critically acclaimed movies, stage productions, and major Hollywood projects. Despite facing intense media scrutiny earlier in her career, she has remained a respected figure in the entertainment industry, admired for her resilience, talent, and authenticity. Let’s explore more about her life, including her age, early background, career journey, family details, net worth, and other key insights.
Quick Bio
- Name: Sienna Rose Diana Miller
- Profession: Actress, Model, Fashion Icon
- Birthdate: December 28, 1981
- Age: 43
- Nationality: British-American
- Famous For: Roles in American Sniper, Factory Girl, Anatomy of a Scandal
- Known Works: Alfie, G.I. Joe: The Rise of Cobra, The Lost City of Z, 21 Bridges
- Height: Approx. 5 ft 5 in
- Hair / Eyes: Blonde / Blue
- Relationship Status: Partner: Oli Green
- Children: 2 daughters
Early Life & Background
She was born in New York City and raised in London after her family relocated. Her mother worked as a model and acting coach, while her father was an investment banker, giving her early exposure to the arts.
Sienna attended Heathfield School in Ascot, where she developed an interest in performing arts and theatre. After finishing her studies, she trained at the Lee Strasberg Theatre Institute in New York, which helped refine her acting skills.
Before becoming an actress, she briefly worked as a fashion model, appearing in campaigns and magazines that helped introduce her to the entertainment world.
Career Overview
Sienna Miller’s breakout role came with the 2004 film Alfie, which quickly brought her international attention. From there, she became one of the most recognized actresses of the mid-2000s, known for both her film roles and her influence on fashion trends.
Her performances grew more critically acclaimed as she took on complex, dramatic roles in films directed by renowned filmmakers. She became known for her ability to move between indie films, biographical dramas, action movies, and period pieces.
Notable Film & TV Work
- Factory Girl (2006) – Portraying Edie Sedgwick
- American Sniper (2014) – As Taya Kyle
- The Lost City of Z (2016)
- G.I. Joe: The Rise of Cobra (2009)
- Anatomy of a Scandal (2022, Netflix)
- Extrapolations (2023)
In addition to film and television, she has earned praise for her theatre work, including performances in As You Like It and Cat on a Hot Tin Roof.
Personal Life
Personal Life
Sienna Miller’s personal life has often drawn media attention, especially during the early 2000s when she was involved in several high-profile relationships. She previously dated actor Jude Law and later welcomed her first daughter, Marlowe, with actor Tom Sturridge in 2012.
In 2022, she began a relationship with actor Oli Green. In 2025, Sienna confirmed that she was expecting her second child with Oli, a moment that received widespread warm coverage as fans celebrated her news. This pregnancy marks a new chapter in her life, reflecting stability, joy, and a renewed focus on family.
Sienna has spoken about motherhood shaping her perspective and helping her prioritize privacy, balance, and emotional well-being.
Net Worth
Sienna Miller’s estimated net worth ranges between $18 million and $20 million. Her income comes from acting roles, brand partnerships, theatre productions, and past modeling engagements. She has also collaborated with major fashion labels, further contributing to her earnings.
Social Media Presence
Sienna Miller keeps a relatively low profile on social media compared to other celebrities. She does not maintain highly active public accounts across all platforms, preferring privacy and selective public appearances. Any accounts linked to her are generally minimal or unverified, and she rarely shares personal updates online.
- Instagram: No consistently active verified account
- Twitter / X: Not active
- Facebook: No official public page
Her limited social media presence reflects her preference for privacy and focus on her professional work rather than online visibility.
Lesser-Known Facts
- She is also a fashion designer who co-created the clothing line Twenty8Twelve.
- She holds dual citizenship: American and British.
- She has been praised for her activism, particularly in women’s rights and privacy reform.
- Her boho-chic style in the 2000s influenced global fashion trends.
- She has worked with humanitarian organizations, including International Medical Corps.
Trivia & Fun Facts
- She is known as a style icon and often appears on best-dressed lists.
- She loves cooking and gardening in her personal time.
- Her performance in Factory Girl remains one of her most acclaimed roles.
- She once lived in New York before settling primarily in London.
- She has frequently chosen roles in emotionally complex dramas.
FAQs
Who is Sienna Miller?
A British-American actress, model, and fashion icon known for her roles in film, TV, and theatre.
How old is she?
She is 43 years old.
Is she married?
No, but she is in a relationship with actor Oli Green.
Does she have children?
Yes, two daughters.
What is her net worth?
Estimated between $18–$20 million.
