Camilla at 75: Duchess of Cornwall marks milestone birthday with new portrait

She will celebrate with a small family dinner at Prince Charles’ Highgrove House

In this undated photo provided by Clarence House, Britain's Camilla, Duchess of Cornwall, poses for an official portrait to mark her 75th birthday, at her home in Wiltshire, England, released on SaturShow more

Camilla, the Duchess of Cornwall, who turns 75 on Sunday, will celebrate the occasion with a small family dinner at Prince Charles’s Highgrove estate in south-west England.

The palace released a new portrait of Camilla for the occasion, taken by Chris Jackson at Camilla's home in Raymill, Wiltshire, last month. In the shot, she is wearing a blue floral dress from Sophie Dundas, and is surrounded by flowers, with a cup of tea in front of her.

The big occasion follows British broadcaster ITV’s release of a documentary about the duchess’s stint as guest editor of Country Life, during which she helped produce a special edition celebrating the magazine’s 125th anniversary. In a personal tribute, Camilla selected Charles, her husband, as one of her rural heroes.

“It’s not easy to write about your husband," she said in the film. “I bit through several pencils.”

The portraits of Camilla for Country Life were shot by her stepdaughter-in-law, Kate, Duchess of Cambridge, who is known as a keen photographer.

The milestone birthday comes at a time when the monarchy, and Camilla’s place in it, are in a generational transition. As Queen Elizabeth II, 96, soldiers on during her twilight years, other members of the royal household are taking on new roles with more responsibilities.

Six months ago, in a statement marking her 70 years on the throne, the queen expressed her “sincere wish” that Camilla would be known as queen consort when her son succeeds her. With those words, Queen Elizabeth sought to answer once and for all questions about the status of Camilla, who was initially shunned by fans of the late Princess Diana, Charles’s first wife.

The queen’s statement marked a big moment in Camilla’s transformation from the “third person” in the marriage of Charles and Diana to consort in waiting. Once blamed for the disintegration of the marriage, the public has grown to accept her in the years since she married Charles in 2005.

She’s taken on roles at more than 100 charities, focusing on a wide range of issues including promoting literacy, supporting victims of domestic violence and people who have osteoporosis. Known for having a wicked sense of humour, she has softened Charles’s stuffy image and made the heir to the throne seem less remote and more accessible.

Camilla alluded to her approach to royal life earlier this week during a reception and lunch sponsored by The Oldie magazine, which honoured her birthday.

In a nod to the magazine’s target audience, the duchess noted that she was born in 1947, the same year that Queen Elizabeth married her late husband, the Duke of Edinburgh. She paid tribute to him, and pledged to emulate his example.

“The Duke of Edinburgh’s philosophy was clear — look up, look out, say less, do more and get on with the job,” she said. “And that’s just what I intend to do.”

See the Duchess of Cornwall's style evolution over the years: