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Who is Sienna Miller’s 26-year-old boyfriend and baby daddy, Oli Green? He’s modelled for Burberry, starred in a film with Florence Pugh, and is set to play Kate Middleton’s ex-boyfriend in The Crown

Sienna Miller with her boyfriend, Oli Green. Photos: IMDB, Getty Images
Sienna Miller with her boyfriend, Oli Green. Photos: IMDB, Getty Images

  • Sienna Miller is pregnant, with the news being confirmed when the Anatomy of a Scandal actress stepped out on holiday in Ibiza in August – so who’s the baby daddy?
  • Oli Green, 26, is an actor who’s starred in productions with Kevin Hart, Morgan Freeman and Justin Theroux, and was in a music video with Cindy Crawford’s daughter Kaia Gerber

Sienna Miller is pregnant!

Oli Green and Sienna Miller attend the men’s singles final match on day 15 of the 2022 French Open at Roland Garros in June 2022, in Paris. Photo: Getty Images
Oli Green and Sienna Miller attend the men’s singles final match on day 15 of the 2022 French Open at Roland Garros in June 2022, in Paris. Photo: Getty Images

The Anatomy of a Scandal actress, 41, showed off her baby bump while on holiday in Ibiza in August, according to media reports. This will be her second child; she currently shares a daughter Marlowe, 11, with her ex Tom Sturridge. In a previous interview with Elle, the British-American “It” girl said that when she turned 40, she decided to freeze her eggs.

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Sienna Miller and Oli Green attend the 2022 Vanity Fair Oscar Party hosted by Radhika Jones at Wallis Annenberg Center for the Performing Arts in March 2022, in Beverly Hills, California. Photo: Getty Images
Sienna Miller and Oli Green attend the 2022 Vanity Fair Oscar Party hosted by Radhika Jones at Wallis Annenberg Center for the Performing Arts in March 2022, in Beverly Hills, California. Photo: Getty Images

So who’s the baby daddy? Miller is in a relationship with Oli Green, an actor who’s 15 years her junior.

Here’s everything you need to know about the man who’s captured Miller’s heart.

Oli Green is an actor

Oli Green is an actor. Photo: @ooroosgreen/Instagram
Oli Green is an actor. Photo: @ooroosgreen/Instagram

Born in 1997 to Jonathan Green and Alison Ross Green, Oli has strong links to the art world through his parents, according to British media. His father is the son of an art dealer and gallerist, while his mum has worked at Sotheby’s in New York and Serpentine Galleries, and is now a VIP adviser at Frieze Masters, per her LinkedIn.

But Oli seems to be walking a different path. Like Miller, Green works in the entertainment industry as an actor. According to People, he studied at the Strasberg Theatre & Film Institute in New York. His IMDB profile shows that he made his debut in 2019 starring in John Eatherly’s “Burnout” music video alongside Cindy Crawford’s daughter Kaia Gerber.
 

Green, a British native, has also appeared in TV series like The Bold and the Beautiful and The Mosquito Coast, and 2023 film A Good Person. He has an upcoming film, Lift, with Kevin Hart and Paul Anderson, that’s currently in post-production.