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.

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.

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

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

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.

A new portrait of the Duchess of Edinburgh has been released to mark her 60th birthday. In it, she appears to be be mid-laugh as she casually sits on a window seat.

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

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

A new portrait of the Duchess of Edinburgh has been released to celebrate her 60th birthday. In the picture, taken by London-based fashion photographer Christina Ebenezer earlier this month, Sophie looks relaxed and happy as she perches in a window seat at her Surrey home.

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