Sienna Miller engaged to model Oli Green after welcoming second child together

Miller and Green have been in a relationship since early 2022 and have largely kept their family life private

Sienna Miller is engaged to actor and model Oli Green, marking the latest milestone in the couple’s long-term relationship, which has developed alongside the arrival of their children.

According to reports, Miller, 44, is set to marry Green, 29, after being seen wearing an engagement ring while in Barcelona earlier this month. The sighting sparked speculation, which has now been confirmed, coming just weeks after the couple welcomed their second child together. 

The pair have been in a relationship since early 2022 and have largely kept their family life private while occasionally appearing together at public events. Their relationship quickly became serious, with the couple later expanding their family and welcoming two children together.

Miller is also mother to her 13-year-old daughter Marlowe, whom she shares with actor Tom Sturridge. The actress has previously spoken about balancing motherhood with her career, while maintaining a relatively low-profile approach to her personal life in recent years.

Green, 29, is an actor and model whose work includes appearances in television projects such as The Crown and The Mosquito Coast, as well as campaigns for major fashion brands. Despite his growing profile, he and Miller have largely kept their relationship out of the spotlight, aside from selected public appearances and occasional joint projects.

The engagement follows a period of major family changes for the couple, with Miller recently revealing she had welcomed her third child in an interview. The couple have not yet shared further details about wedding plans.

News of their engagement has been met with widespread attention given Miller’s high-profile acting career, which includes roles in films such as American Sniper, The Lost City of Z and Foxcatcher. Green, meanwhile, continues to work across acting and modelling as his career develops.

While the couple have not made a formal public statement, the engagement ring sighting and subsequent confirmations have marked a clear new chapter in their relationship as they continue to build their family together.