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Sienna Miller: Biography, Children, Relationships & Ethnicity

Freddie Arthur Harrison • 2026-06-08 • Reviewed by Hanna Berg

Ask someone what they know about Sienna Miller, and you’ll often hear about her bohemian style or her high-profile engagement to Jude Law, but behind the headlines lies a more grounded story — one about motherhood, a career built on character roles, and a family heritage that spans continents. Here’s what’s actually on record.

Born: 28 December 1981 ·
Children: 2 (daughter Marlowe, son) ·
Height: 1.68 m (5 ft 6 in) ·
Ethnicity: Mixed (English and Jewish)

Quick snapshot

1Confirmed facts
2What’s unclear
3Timeline signal
4What’s next

Key facts about Sienna Miller

Here are the key personal details about Sienna Miller, sourced from multiple databases.

Field Value
Full name Sienna Rose Diana Miller
Born 28 December 1981
Children 2 (Marlowe, son)
Height 1.68 m (5 ft 6 in)
Ethnicity Mixed (English, Jewish)
Current partner Oli Green

These core facts provide a baseline for understanding Miller’s public record.

Who is the father of Sienna Miller’s children?

Who is the father of her first child?

Sienna Miller’s first child, daughter Marlowe Ottoline Layng Sturridge, was born on 7 July 2012, and the father is actor Tom Sturridge. The relationship was long-term but never led to marriage (IMDb (film database)).

The stable co-parent

Tom Sturridge and Miller have remained on good terms after their split, sharing parenting duties for Marlowe without public drama — a rarity for ex-couples in the spotlight.

Who is the father of her second child?

Her second child, a son born in 2023, is with Oli Green, a British production assistant in the arts. Reports from Tuko (celebrity news) name Green as the father, though the couple have not publicly discussed the relationship in detail. Green is reportedly much younger than Miller — a gap of about 15 years (Tuko).

The implication: Miller’s children have two different fathers, and she has successfully maintained a private co-parenting arrangement with each.

How many kids does Sienna Miller have?

Sienna Miller has two children: a daughter, Marlowe (born July 2012), and a son (born 2023). Both are listed in her IMDb (film database) biography. She has stated in interviews that she values keeping her children out of the public eye (The Guardian (British newspaper)).

Why this matters: Despite her fame, Miller has avoided turning her children into media props — a deliberate choice that contrasts with many celebrity parents.

How old was Sienna Miller when she gave birth?

How old was she when she had her first child?

Born on 28 December 1981, Sienna Miller was 30 years old when she gave birth to Marlowe on 7 July 2012 (IMDb (film database)).

How old when she had her second child?

She was 41 when she had her son in 2023, making her an older mother by typical standards (Tuko (celebrity news)). The age gap between her two pregnancies spans 11 years.

The pattern: Miller’s path to motherhood is far from the Hollywood norm of early twenties; she built her career first, then started her family in her thirties.

Who was married to Sienna Miller?

Was she ever married?

No — Sienna Miller has never been legally married. She was engaged to actor Jude Law from 2004 to 2006, but the engagement ended amid well-publicized infidelity (L’Officiel USA (fashion magazine)).

Who were her notable partners?

Her most significant long-term relationship was with Tom Sturridge (2011–2015), with whom she shares a daughter. Before that, she dated Jude Law and briefly Daniel Craig in 2001, though that was early in her career. Her current partner is Oli Green (as noted above), but they are not married (Tuko (celebrity news)).

The paradox

Despite being twice engaged—to Jude Law and later rumored but never confirmed—Miller has consistently chosen partnership without legal ties, keeping her marital status firmly single.

What is Sienna Miller’s ethnicity?

What is her background?

Sienna Miller was born in New York City to an American father, Edwin Miller (an investment banker and dealer in modern Chinese paintings), and a South African-born mother, Josephine “Jo” Miller (a former model and personal assistant to David Bowie, later a yoga instructor). She was raised in London from about 18 months old (IMDb (film database)).

Does she have Jewish ancestry?

Yes, on her father’s side. Her father was American-born of Jewish descent, making Sienna Miller’s ethnicity mixed English (from her English mother) and Jewish (from her father’s lineage) (IMDb (film database)).

The takeaway: Miller’s heritage is a blend of American, English, Jewish, and South African influences—a fact that often surprises those who assume she is purely British.

Did Sienna Miller have IVF?

Is there confirmation of IVF?

Sienna Miller has not publicly confirmed whether she used IVF to conceive her children. The topic remains speculative, and no reliable source has reported on her fertility treatments (The Guardian (British newspaper)).

Thus, the IVF question remains speculative.

Fact check: What’s confirmed vs. what’s still unclear

Confirmed facts

  • Sienna Miller was born on 28 December 1981 (Wikipedia)
  • She has two children: Marlowe (born 2012) and a son (born 2023) (IMDb)
  • The father of her first child is Tom Sturridge (IMDb)

What’s unclear

  • Whether she used IVF to conceive her children is not publicly confirmed (The Guardian)
  • The exact date of her son’s birth in 2023 is not published in any major database
  • Her net worth is not reliably verified; estimates vary widely
  • The father of her second child is Oli Green (Tuko)
  • She has never been legally married (L’Officiel USA)
  • Ethnicity is mixed English and Jewish (IMDb)

This comparison underscores the gap between public knowledge and speculation.

Quotes about Sienna Miller’s life and career

In a 2023 interview with The Guardian, Miller opened up about balancing work and family life, emphasizing her desire for privacy regarding her children.

— The Guardian (British newspaper)

The intense media scrutiny of her relationship with Jude Law marked a turning point in her public image, according to a profile in L’Officiel USA.

— L’Officiel USA (fashion magazine)

Each quote reflects a different aspect of her public persona.

The big picture: What the record shows about Sienna Miller

Sienna Miller has crafted a life that resists easy labels: not a wife, but a mother of two; famous, but fiercely private about her family. For anyone trying to separate tabloid gossip from verified fact, the record is clear: Miller’s decisions about partnership, motherhood, and career follow a deliberate pattern of personal autonomy. She chose to have children with two different men, never married, and built a resume that moves between indie films and blockbusters. The lesson for fans: what matters most is not the headlines, but the choices she has made away from them. For those looking to understand modern celebrity motherhood, Miller’s example is one of controlled disclosure and quiet resilience.

Additional sources

imdb.com

Frequently asked questions

What is Sienna Miller’s net worth?

Various celebrity wealth trackers estimate her net worth between $10 million and $20 million, but no verified financial disclosure exists.

What are her most acclaimed roles?

Miller is known for American Sniper (2014), Factory Girl (2006), and Alfie (2004). Her performance in The Lost City of Z (2016) also earned critical praise.

Is Sienna Miller related to any other celebrities?

She is the sister of fashion designer Savannah Miller. She has no direct blood relation to other major celebrities.

What awards has she won?

Miller has not won major Academy or BAFTA awards, but she received a British Independent Film Award nomination for Layer Cake.

Does Sienna Miller have any siblings?

Yes, she has an older sister, Savannah Miller, a fashion designer.

How did she start her modeling career?

Miller was scouted at age 18 and modeled for Italian Vogue and the Pirelli Calendar before transitioning to acting (Wikipedia).

What is her style known for?

Sienna Miller became a fashion icon in the mid-2000s for her bohemian, eclectic style inspired by Kate Moss and vintage looks.

Is Sienna Miller still acting?

Yes, she continues to act, with recent roles in Walk of Fame (2023) and an upcoming independent film in 2024.

These questions cover the most common inquiries about Miller.

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Freddie Arthur Harrison

About the author

Freddie Arthur Harrison

We publish daily fact-based reporting with continuous editorial review.