Actress Sienna Miller made headlines at the 2025 Fashion Awards in London on December 1 after revealing she is expecting her third child—her second with partner Oli Green. The Horizon: An American Saga star arrived at the Royal Albert Hall in a breathtaking sheer white gown that instantly captured attention.
Miller, 43, wore a floor-length, nearly transparent dress paired with simple white undergarments, elegantly highlighting her growing baby bump. She styled her hair in loose waves and accessorized with delicate dangling earrings, completing her radiant red-carpet look.
The actress posed solo and alongside Green, who opted for a sleek suit worn with an open-collar shirt. During the event, the couple also crossed paths with Mick Jagger and his fiancée Melanie Hamrick. Photos from the moment show the group greeting one another warmly, with Miller gently holding her bump.
Hamrick complemented the glamorous atmosphere in an off-the-shoulder black gown adorned with sparkling floral details, a sleek ponytail, and a bold red lip. Jagger wore a black polka-dot jacket, matching scarf, and dark trousers.
Miller’s pregnancy announcement came as an exciting surprise to fans. This baby will be her third child. She shares her first daughter, Marlowe, with former fiancé Tom Sturridge, whom she welcomed in 2012. Miller began dating Green in 2021, and the couple quietly welcomed their first child together—a daughter—around early 2024. True to their private nature, they have chosen not to reveal her name or birth details.
