Sienna Miller Brings Heat at Serpentine Summer Party in Thick Fur Coat

Sienna Miller attended the Serpentine Summer Party on June 24, 2026, wearing a thick fur coat during a heatwave, according to reports from Yahoo News Australia and the London Evening Standard. Other high-profile attendees included Salma Hayek, Isha Ambani, and Celia Imrie.

Miller’s attire drew immediate attention from reporters due to the weather conditions. The London Evening Standard reported that Miller smiled while wearing the heavy coat despite the heatwave.

The Telegraph identified Miller and actress Celia Imrie as two of the best-dressed guests at the event.

Why did Sienna Miller wear a fur coat to the Serpentine Summer Party?

While sources did not provide a specific reason for the wardrobe choice, Yahoo News Australia and the London Evening Standard both highlighted that Miller “braved” the heatwave to wear the garment. The contrast between the thick material of the coat and the high temperatures became a primary focus of the event’s fashion coverage.

Who else attended the Serpentine Summer Party?

The guest list included a mix of international figures from film, music, and business. Salma Hayek, 59, attended in a silky dress, which HELLO! Magazine described as a “goddess” look.

Isha Ambani wore a vibrant red dress for the occasion. According to the Hindustan Times, Ambani paired the dress with jewelry belonging to her mother, Nita Ambani.

Other verified attendees included:

• Ellie Goulding
• Rebel Wilson
• Tyler Ellis
• Ramona Agruma
• Richard E Grant

How did different media outlets frame the event?

Reporting on the party varied significantly by outlet, focusing on different aspects of the guests’ appearances. The London Evening Standard and Yahoo News Australia framed Miller’s appearance through the lens of the weather, emphasizing the physical discomfort of a fur coat during a heatwave.

The Hindustan Times focused on the luxury and heritage of the Ambani family, specifically highlighting the “bling” and elegance of the jewelry worn by Isha Ambani.

Meanwhile, The Telegraph took a more traditional fashion-critique approach, categorizing Miller and Imrie as leaders in the “best-dressed” category rather than focusing on the temperature.