Sienna Miller is set to marry actor and model Oli Green, following reports of their engagement, as reported by E! News. The exciting news comes shortly after Miller announced that the couple had welcomed their second child together, marking a significant moment in their evolving relationship.
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Miller, aged 44, and Green, who is 29, were first linked romantically in early 2022. The pair have been seen together at various outings, including basketball games and intimate dinners, showcasing their growing bond. The engagement became apparent on June 5, when Miller was spotted in Barcelona wearing what appeared to be an engagement ring during a casual outing. She was dressed comfortably in blue jeans and a white tank top, carrying her newborn baby close to her chest, providing a glimpse of the ring as she tended to her little one.
The actress, known for her roles in films such as “American Sniper,” is not new to motherhood. She also has a 13-year-old daughter, Marlowe, from her previous relationship with actor Tom Sturridge. With the arrival of her second child with Green late in 2023, the couple has clearly established a family-focused dynamic.
In a heartfelt interview with E! News earlier this month, Miller revealed her feelings about motherhood. “It’s happened. I have a tiny baby next door,” she said, describing the challenges of adjusting to a newborn. She candidly admitted that her sleep schedule has suffered, but emphasised the joy she feels, stating, “I’m madly in love with my baby,” demonstrating her excitement about the new addition to their family.
Miller and Green’s relationship has garnered considerable public attention. During a November 2022 feature in British Vogue, the actress opened up about their 15-year age difference and the societal attitudes towards it. She spoke against the ingrained misogyny she perceives in older generations, particularly in men. “There’s a misogyny that is ingrained in men of my age and older that I don’t see in [the] generation below,” she explained, showcasing her thoughtful approach to modern relationships.
The couple made a public appearance at the Vanity Fair Oscars afterparty in 2022, confidently walking the red carpet hand in hand. This was seen as a significant step in affirming their relationship in a glamorous setting, further solidifying their status as a couple in the public eye.
Reflecting on their journey, Miller shared her unexpected affection for Green following their encounter at a Halloween party. “I didn’t expect this to be serious,” she told Harper’s Bazaar in a 2024 interview. “And then quite quickly, I fell in love.” She also candidly admitted to her initial reservations about the age difference, admitting, “F—! Why are you young? That’s so annoying,” highlighting the complex dynamics often present in relationships with significant age gaps.
Green, besides being Miller’s partner, is establishing a career of his own in both acting and modelling. He has starred in various television series, such as “The Bold and the Beautiful,” “The Mosquito Coast,” and “The Crown.” Additionally, he has participated in numerous high-profile modelling campaigns, including one for Burberry. In early 2025, the couple made headlines when they became the first to star in a Frame denim advertisement, photographed by Erik Torstensson, a long-time friend of Miller’s.
As the couple prepares for their upcoming wedding, fans and followers are eager to see the next chapter in their lives unfold. With two children to care for and an engagement to celebrate, Miller and Green appear to be building a loving and supportive family together. The excitement around their relationship continues to grow, illustrating both their personal happiness and the evolving nature of modern relationships in the public eye.