Sienna Miller and Oli Green have welcomed a baby girl. Here is what is confirmed, the timeline from reveal to birth, and how the blended family fits together.
Sienna Miller and Oli Green: second child confirmed, first together
Sienna Miller has welcomed her second child, a baby girl, with actor and model Oli Green. The news surfaced in early January 2024 after photographs showed the couple out in London with a newborn, and outlets including People reported that Miller had given birth to a daughter.
This marks Miller’s second time becoming a parent and Green’s first. Sienna Miller already shares a daughter, Marlowe, born in 2012, with actor Tom Sturridge. The baby’s name has not been publicy disclosed, and the couple has kept details tight, consistent with how they have handled their relationship since first being linked.
From pregnancy reveal to baby arrival: a clear timeline
The main arc is simple and precise. Pregnancy speculation began in August 2023 when vacation photos appeared in British media, and British Vogue soon profiled Miller as she spoke openly about expecting again at 41. In that coverage, she acknowledged the life shift while continuing to work.
By March 2022, Miller and Green had already made their red carpet debut at the Vanity Fair Oscar Party, setting their relationship in the public eye with a cool ease. Their age difference, 15 years, became a recurring talking point in headlines, though both actors kept the conversation focused on work, family, and everyday life rather than commentary.
Then came January 2024. People magazine confirmed the baby’s arrival and referred to Miller’s newborn as a girl. Photographs from London that week showed Miller and Green pushing a pram, a visual detail that aligned with the reporting without revealing personal specifics like a name or birth date.
What fans ask, what the couple shares, and the family picture now
The biggest questions from readers are direct: Is it a girl, when did the baby arrive, and what is the name. One answer is firm, backed by reporting in January 2024: the child is a daughter. Another is general but reliable: the birth took place around the start of 2024, given the timing of the photos and coverage. The name remains undisclosed, which fits the couple’s preference for measured sharing.
There is also the blended family dynamic. Sienna Miller co-parents Marlowe with Tom Sturridge. Their rapport has often been described as supportive, and in July 2023 they were photographed at Wimbledon alongside Alexa Chung, whom Sturridge has been dating since 2022. That snapshot of modern family life helps explain why the arrival of a new baby feels both intimate and grounded in a wider circle.
For context seekers, here are the fixed points. Miller’s first child arrived in 2012, well before her relationship with Green. She and Green stepped into the spotlight together in 2022. Pregnancy coverage accelerated in August 2023. A newborn was seen in January 2024. Across those dates, the through line is consistent privacy on sensitive details and a clear willingness to let confirmed facts speak for themselves.
The upshot is that anyone wondering about Sienna Miller and Oli Green’s second-child news can rely on a few solid pieces: a baby girl, first for Green, second for Miller, with the family seen together in London shortly after New Year 2024 and reporting from People in that same window. Everything else, like the name or any first-look portrait, will likely arrive on the couple’s timing or via a future magazine profile, not in a rushed announcment.