A diamond-studded moment in Spain just became the headline heard around the celebrity circuit. Sienna Miller was spotted in June rocking an unmistakable engagement ring on her left hand, and E! News has confirmed what the sparkle was saying all along: she’s getting married to Oli Green.
The 44-year-old actress and the 29-year-old Green have been building a life together quietly but decisively. They welcomed their second baby together in May (Miller announced the birth in an E! News interview, sharing“It’s happened. I have a tiny baby next door”), following their first daughter, whose name has remained private since their 2024 arrival. Miller also shares an eldest daughter, Marlowe, with ex Tom Sturridge, whom she split from in 2015. So this engagement marks a major milestone for a blended family that’s already grown considerably in the past two years.
What makes the Miller-Green pairing interesting isn’t just the ring—it’s the 15-year age gap and how openly Miller has discussed it. Back in 2024, speaking with Harper’s Bazaar, she recalled her initial reaction to discovering his age:“I wasn’t like,‘I’m gonna get a younger boyfriend.’It was more,‘F***! Why are you young? That’s so annoying.'”But she didn’t stay annoyed for long. By her own account, she fell in love quickly and found in Green something she values deeply: respect. She noted that his generation of men“have grown up with a slightly more level playing field,”and credited him personally as“very wise and well-adjusted.”
Miller first linked romantically to Green in 2022, so this engagement comes after years of building trust and family. The couple has kept most details private—even their first daughter’s name—which suggests they’re less interested in the spotlight than in protecting their peace. The engagement ring, spotted on Thursday, June 4 while Miller was out in Spain in jeans and a black shirt, was practically understated compared to some celebrity announcements. No grand public reveal, no social media countdown. Just a woman in sunglasses with a diamond on her finger, letting the ring do the talking.
This is a relationship that resisted easy categorization from the start. It defied the age-gap skepticism, produced children, and now, it’s moving toward marriage. For Miller, it seems to represent something simpler than tabloid fodder:“I fell in love,”she said in that Harper’s Bazaar interview. The ring says the rest.
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Local Lawton
Local Lawton is a contributor to LocalBeat, covering local news and community stories.