Sienna Miller oozes androgynous chic in a tux as she joins glam Kate Winslet, Benedict Cumberbatch and James Norton at A-list carol service hosted at St George's Church

Sienna Miller, Kate Winslet, Benedict Cumberbatch and James Norton were among the Hollywood elite attending a star-studded carol service on Wednesday evening.

The group of A-listers were seen leaving St George's Church following the Story of Christmas Appeal last night in Hanover Square, London.

Sienna, 42, cut a cool figure in a black tuxedo and bow tie ensemble, which she styled with a white shirt and a pair of statement earrings.

The actress wore her dark blonde locks up in a chic updo and opted for a glamorous coat of make-up with a slick of red lipstick.

She accessorised with a red clutch bag and added height to her petite frame with a pair of simple back stilettos.

The stars enjoyed performances from the Band & Fanfare Trumpeters of the Scots Guards and the Choir of Westminster Cathedral. 

Celebrity readers included Rowan Atkinson, Simon Callow, Victoria Coren Mitchell, Benedict Cumberbatch, Rupert Everett and Aled Jones.

The congregation also heard from Ian Hislop, The Lord Bishop of London, Sienna Miller, James Norton, David Mitchell, Hussina Raja, Sophie Raworth, Julia Sawalha, Adrian Scarborough, Dan Snow and Kate Winslet.

The charity event this year raised more than £1million for the first time in the event's 47 year history.

Elsewhere at the event, Kate, 49, looked incredible in a white satin blazer which she styled with silky black trousers and black stilettos.

She wore her blocks locks in soft waves and opted for minimal make-up, while accessorising with a selection of gold necklaces.

The Holiday actress was spotted getting into the back of a taxi with her businessman husband Edward Abel Smith, who she married in 2012.

Meanwhile, Benedict, 48, opted for a dapper blue velvet jacket, which he wore with suit trousers, a white shirt and a black tie.

James Norton looked equally dashing in a sharp tuit with a red patterned tie, while adding a pair of aviator style glasses.

Following his reading, Rowan left the church in his classic black tux, while toting a copy of the event's program. 

The Story of Christmas was founded in 1987 and is an annual Christmas charity event  supported by the property and construction industries. 

Held each year in December, it begins at St George's Hanover Square with a spectacular service of Nine Lessons and Carols. 

Readings are presented by a dazzling array of celebrated names from public life.

Festive music is performed by the Band & Fanfare Trumpeters of one of the Foot Guard Regiments and a leading choir. 

Following the service there is a fully-catered champagne reception and charity auction at the Sheraton Grand London Park Lane on Piccadilly.

The event raises funds to support a broad and diverse range of charitable projects, benefitting homelessness and disadvantaged children.