The Prince and Princess of Wales have taken to Instagram to mark Queen Camilla's birthday today. In an Instagram story posted this morning, Prince William, 43, and Princess Kate, shared the Royal Family's post to Camilla, 78, which included a new photograph of Her Majesty.

In the photo, taken to mark her 78th birthday, Camilla can be seen leaning on a garden gate at her private Wiltshire home Raymill. The photograph was taken by Getty photographer Chris Jackson, who has photographed Camilla for the last two decades.

As well as William and Kate, 43, sharing the photograph on their story, they also wrote above it: "Happy birthday To Her Majesty!"

This was followed by a sweet cake emoji.

Queen Camilla is believed to be set to celebrate her big day with her nearest and dearest today.

Although it is not known what gifts she has been given from her royal relatives, including her husband King Charles, she was given a rather unusual birthday present yesterday during a royal engagement.

At a garden party at HMS Drake in Devon, where the Queen became the Lady Sponsor of HMS Astute, she was given a roll of cling film on a wooden stand.

As reported by The Independent, Her Majesty reportedly remarked: "There’s nothing more useful, brilliant how wonderful."

It is not known who Camilla will be spending her special day with today, however it is believed she will be marking the occasion privately.