Sophie, the Duchess of Edinburgh is starring in a new portrait for her 60th birthday, and the photographer behind the camera is sharing an unseen snap from the photo session.

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

It’s a milestone birthday for Duchess Sophie, who officially rang in the special day on January 20 with a little more pomp and circumstance than usual, courtesy of an official new portrait and plans for a major birthday celebration at their Berkshire home Bagshot Park.

In a series of candid photographs by Christina Ebenezer, the Duchess of Edinburgh chose a wardrobe of re-wears that hint at her new era of royal life

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

Duchess Sophie has gotten back to work after celebrating her milestone 60th birthday.On January 21, the Duchess of Edinburgh has visited Dogs for Autism in Alton, Hampshire, where she learned about the positive impact of these assistance dogs.

On the cusp of turning 60, the Duchess opens up about the Queen’s legacy, her evolving public persona, and moments of normalcy she cherishes

Sophie, the Duchess of Edinburgh is marking a milestone birthday! She turned 60 on Jan. 20, and friends and former colleagues have been honoring her contribution to the royal family – amid the release of the duchess' stunning new portrait.

I love how she is not afraid to try new things and she makes beautiful choices,” designer Suzannah Crabb of royal favorite Suzannah London tells PEOPLE

Duchess of Edinburgh Celebrates Her 60th Birthday with New Portrait & Tributes Sophie, Duchess of Edinburgh celebrates her 60th birthday today. The Royal Family shared a video celebrating her work on their official X account.