A photograph of the Duchess of Edinburgh smiling has been released by Buckingham Palace to celebrate her upcoming 60th birthday. The photo of Sophie mid-laugh perched on a window seat at her home in Bagshot Park was captured by the London-based photographer Christina Ebenezer earlier this month.

The royal family Instagram account is getting ahead of the festivities and just shared Duchess Sophie's portrait before her birthday on Monday. However, there's one tiny detail that I almost missed—and it has nothing to do with her photos.

The picture was taken at Bagshot Park this month by photographer Christina Ebenezer, who was recommended by the duchess for her "creative style" of work.

Sophie looks happy and relaxed in the Palace-released image, captured by London-based portrait, fashion and commercial photographer Christina Ebenezer at Bagshot Park this month

The duchess is set to celebrate the milestone at home with the Duke of Edinburgh on Monday at her Bagshot Park home.

The Duchess of Edinburgh is marking her 60th birthday privately at home with the Duke of Edinburgh, and a new photograph has been released to mark the milestone

Sophie, the Duchess of Edinburgh, has marked her 60th birthday on Monday with the release of a new photograph.

Sophie has risen in public prominence over the past year and delivered a message from King Charles to crowds outside Birmingham New Street in November

The picture of a relaxed looking Sophie was taken by fashion photographer Christina Ebenezer.