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 Royal Family released a new photograph of Duchess Sophie on Saturday to mark her upcoming 60th birthday. In the photo of the Duchess of Edinburgh, taken by Christinae Benezer, the royal can be seen smiling as she sits on a windowsill in her Bagshot Park home in Surrey.

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

The Duchess of Edinburgh has a big birthday on Monday. It is best not to mention the number too loudly. “I’m 21!” she protests, laughing, before being reminded that it is he

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.

Photographer Christina Ebenezer took the picture of the Duchess of Edinburgh, and perfectly captures the senior royal's effortless charm.

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