Oli Green recently attended the 2025 Fashion Awards in London, England, at the Royal Albert Hall with his partner, Sienna Miller. Sienna, 43, who has been AWOL in recent months, made a rare appearance at the event and revealed on the red carpet that she was expecting her second child with the actor. View this post on Instagram Instagram PostOli, 28, is an actor and model. He began his acting career after graduating from the Strasberg Theatre & Film Institute in New York and is known for his roles in The Bold and the Beautiful, The Mosquito Coast, A Good Person, and The Crown. The actor is also a successful model and has worked with notable brands like Burberry.Recently, Oli Green and Sienna Miller appeared at the 2025 Fashion Awards on Monday, December 1, 2025. They walked the red carpet with Sienna wearing a white, see-through Spring 2026 Givenchy dress, and the expecting father wearing a black suit paired with a creamy yellow inner shirt.More details on Sienna Miller and Oli Green’s relationshipOli Green and Sienna Miller’s relationship can be traced back to early 2022. The couple confirmed their relationship in March that same year and have since then attended several events together. They had their first child, a girl, together in January 2024. View this post on Instagram Instagram PostMiller spoke about their first couple’s trip to the Maldives. Describing the experience to The Sunday Times, Sienna wrote:“When Oli and I were preparing for the trip we realized that we’d never actually been on holiday, just the two of us, in our entire relationship.”She added:“So it was really magical to have that time together, thinking about each other and the baby that was about to arrive.”Oli Green and Sienna share a 14-year age difference. Speaking to Harper’s Bazaar in June 2024, Sienna revealed that she didn’t expect their relationship to last this long.“I didn’t expect to take it seriously. And then quite quickly, I fell in love.”She continued:“I wasn’t like, ‘I’m gonna get a younger boyfriend.’ It was more, ‘F*ck! Why are you young? That’s so annoying.'”She added:“There is a difference in the way that generation of men respect women. It’s specific to him, he is very wise and well-adjusted, but I do believe it’s also that generation. They have grown up with a slightly more level playing field. I see it in his female friends as well as in the men.”Also read: "Just need Jay Crawford now" - Fans react to Skip Bayless' photo with Stephen A. Smith going viral after having dinner together in Beverly Hills