Sienna Miller's Kids: 3 Children, Ages & Family (2026)

The Direct Answer: Sienna Miller's Children

The short answer to 'Sienna Miller's kids' is in the table below, and the longer story follows it. Sienna Miller's family includes three children, and all ages are as of October 7, 2026. Each birth date in this article was cross-checked against public records and reputable reporting on October 7, 2026 itself, so the ages reflect who has had a birthday this year and who is still waiting for one. If you only need the number, the table has it; if you want the birth stories, the names, and the family timeline, keep reading.

That table is the quick answer, and everything below it is the context that makes the answer meaningful. You will find how each child arrived, the milestones in Sienna Miller's family life in chronological order, and an honest account of what the family shares publicly versus what it keeps private. All of it was verified against public sources as of October 7, 2026.

Marlowe Sturridge (Age 14)

Marlowe Sturridge, Sienna Miller's 1st child, was born on July 7, 2012. Marlowe is 14 years old as of October 7, 2026. Marlowe Ottoline Layng Sturridge was born on July 7, 2012; her father is actor Tom Sturridge.

Marlowe's name has its own small story. Marlowe Ottoline Layng Sturridge was born on July 7, 2012; her father is actor Tom Sturridge. Names carry weight in celebrity families — sometimes they honor relatives, sometimes they mark a fresh start, sometimes they simply sounded right to two new parents — and Sienna Miller chose this one deliberately before announcing it to the world. In the years since, the name has appeared in birth records, birthday tributes, and the occasional headline, becoming inseparable from the child's public identity. Whatever the private reasoning behind it, the public record is settled: this is the name, this is the birth date, and everything else on this page is built on those two facts.

What the public knows about Marlowe comes in small, deliberate doses — a birthday tribute here, a family photo there, a passing mention in an interview. Sienna Miller draws the privacy line in the same place most careful celebrity parents do: milestones are public, routines are not. The result is that Marlowe's childhood belongs mostly to Marlowe, which is exactly the point. Fans who want more will be disappointed; the family considers that a feature, not a bug.

For fans tracing the chronology, Marlowe's birth sits between the milestones listed in the timeline below — after some, before others — and it recontextualizes them. Career moves that once looked purely professional now read as decisions made by a parent: the projects taken or declined, the tours scheduled around school terms, the interviews where family comes up unprompted. Parenthood does not replace the career, but it edits it, and Marlowe's arrival was the edit.

Second Child (Age 2)

Sienna Miller's second child was born on January 2024 and is 2 years old as of October 7, 2026. Her daughter with Oli Green was born in January 2024; her name has not been made public.

Sienna Miller has never made this child's name public — a deliberate privacy choice, not an oversight. In an era when many celebrity babies are announced with magazine covers, keeping a name private is a statement: this child's identity belongs to the child. Beyond the birth date, little is shared, and that is exactly how the family wants it.

What is known is limited to the essentials, and the family guards even those. Sienna Miller rarely discusses this child in interviews beyond the fact of parenthood itself. As the child grows, that boundary may shift — or it may not. For now, the public record contains a birth date and a parent's love, and nothing more needs to be there.

Looking ahead, this child's story is still being written, and the family will decide how much of it becomes public. For now, the verified facts are the birth date, the name, and the parents — everything else is either private or speculative, and this guide declines to speculate. What can be said with confidence is that this child is growing up in a stable, deliberately guarded household, which is more than many celebrity children get.

Third Child (Under 1)

Sienna Miller's third child was born on May 2026 and is under 1 year old as of October 7, 2026. Her son with Oli Green was born in May 2026; his name has not been made public.

Sienna Miller has never made this child's name public — a deliberate privacy choice, not an oversight. In an era when many celebrity babies are announced with magazine covers, keeping a name private is a statement: this child's identity belongs to the child. Beyond the birth date, little is shared, and that is exactly how the family wants it.

What is known is limited to the essentials, and the family guards even those. Sienna Miller rarely discusses this child in interviews beyond the fact of parenthood itself. As the child grows, that boundary may shift — or it may not. For now, the public record contains a birth date and a parent's love, and nothing more needs to be there.

Placed on the family timeline, this child's arrival marked a turning point. Before the birth, Sienna Miller's public story was primarily a career story; afterward, it became a family story too, and interviews from that era onward return to parenthood again and again. The birth did not just add a person to the household — it rearranged Sienna Miller's priorities in the way first children (and second, and third) always do, shifting the center of gravity from work to home.

Sienna Miller Family Timeline

Families are best understood in order. Here is how the Sienna Miller family grew, from the first arrival to the present day — each date verified as of October 7, 2026.

• July 7, 2012 — Marlowe is born.
• January 2024 — Daughter with Oli Green is born.
• May 2026 — Son with Oli Green is born.
• June 2026 — Miller and Green announce their engagement.
• October 2026 — Marlowe is 14, her sister is 2, and her brother is under a year old.

Read straight through, the timeline tells its own story: from July 7, 2012 to October 2026, the family grew one arrival at a time The gaps between arrivals, the years of quiet, the milestones in between — it is the family's history in miniature, and every date above anchors an age stated elsewhere on this page.

Family Life & Parenting

Miller's family spans two relationships: Marlowe with Tom Sturridge, and two younger children with Oli Green. She has spoken about the joy of late motherhood.

The children's relationship with fame varies by age and temperament, but the parental policy does not: no child is pushed into the spotlight, and none is used as content. Older children who choose public lives of their own — acting, music, social media — do so on their own terms. Younger ones are simply kept out of it until they are old enough to decide for themselves.

One thing fame cannot buy is time, and Sienna Miller's schedule is the family's scarcest resource. The solution, visible across years of interviews and social posts, is presence over presents: showing up for the school play, the match, the recital, even when work makes it difficult. It is the least glamorous part of celebrity parenthood and the most important, and by all public indications this family takes it seriously.

Sienna Miller's Kids: Ages at a Glance

For quick reference, here is the whole family as of October 7, 2026:

Marlowe Sturridge is 14 years old (born July 7, 2012); second child is 2 years old (born January 2024); third child is under 1 year old (born May 2026). The span from eldest to youngest is 14 years.

How the Ages Were Calculated

A note on method, because celebrity children's ages are notoriously misreported. Every age on this page was calculated the same way: take the verified date of birth, count forward to October 7, 2026, and state the completed years. Where only a month or year of birth is public, the age is given as stated in the source and the imprecision is flagged rather than hidden. Where a birthday falls within days of October 7, 2026, the guide says so explicitly instead of letting the number quietly go stale.

This matters because most of the internet's answers to 'how old is' questions are undated. A fan wiki edited in 2023, a magazine profile from 2024, an AI answer with no timestamp — all of them freeze a child's age at the moment of writing. This page does the opposite: it names its reference date (October 7, 2026) in the lede, in every section, and in every FAQ answer, so the numbers are checkable and the reader always knows what 'now' means.

Why You May See a Different Age Elsewhere

If you have seen a different age for one of these children elsewhere, there are a few usual explanations, and none of them require anyone to be lying. The most common is staleness: an article written months or years ago stating an age that was correct then and is wrong now. Children's ages change annually while articles live forever, and search engines do not always surface the newest version.

The second explanation is the birthday edge: a child born in October, read about in early October, may be listed at the old age by sources that have not caught up — or at the new age by sources jumping the gun. This guide handles those cases by naming the exact birth date and the exact reference date (October 7, 2026), so you can do the arithmetic yourself. When sources conflict on a date, the guide says so rather than picking a winner silently.

What's Next for the Miller Family

As of October 7, 2026, the Sienna Miller family is in its mixed ages: the family spans babies or toddlers through school-age children The next milestones are the ordinary ones that matter most to families — birthdays, school years, holidays — unfolding mostly out of public view, as Sienna Miller prefers.

Stepping back, the throughline of this family's public story is steadiness. There are no custody sagas playing out in headlines, no children thrust into fame before they can choose it, no contradictions between what the family says and what the records show. The birth dates check out, the timeline holds together, and the privacy boundary has been respected for years. That consistency is why a guide like this one can be written with confidence: the facts are stable because the family is stable.

Family guides like this one go stale fast, because children keep having birthdays. Every age on this page is anchored to October 7, 2026 and to a verified birth date, so you can recalculate any of them yourself. This guide will be revisited as the family grows or as new milestones become public.

Frequently Asked Questions

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