King Charles, Princess Eugenie and Princess Beatrice are supporting Sarah Ferguson following her second cancer diagnosis in six months.
The Duchess of York has been diagnosed with skin cancer less than a year after receiving a breast cancer diagnosis.
Sarah Ferguson's daughters Princess Beatrice and Princess Eugenie have rallied around their mother as has Fergie's ex-husband Prince Andrew.
King Charles and Queen Camilla have also been supporting the Duchess of York, according to a source.
King Charles, Princess Eugenie and Princess Beatrice are supporting Sarah Ferguson following her second cancer diagnosis in six months.
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The source close to Fergie said: "She has the support of her immediate family: the Duke [Andrew], Beatrice and Eugenie, who have been steadfast throughout everything she has been going through.
"They have always propped each other up in difficult times and this is no different.
"But the King has also been extremely supportive of her since her breast cancer diagnosis – he has been fantastic and so has the Queen."
A Palace insider told the Telegraph regarding Charles and Fergie's relationship: "They’ve always got on well and let’s be honest, last Christmas would not have happened as it did unless the King wanted it to happen like that, mindful of the message it was sending."
Sarah Ferguson posted a statement on Instagram regarding the diagnosis.
PA
On Monday, Sarah Ferguson posted a statement on Instagram regarding the diagnosis.
The Duchess of York said it had come as a shock but she remains in good spirits.
Fergie wrote on Instagram: "I have been taking some time to myself as I have been diagnosed with malignant melanoma, a form of skin cancer, my second cancer diagnosis within a year after I was diagnosed with breast cancer this summer and underwent a mastectomy and reconstructive surgery.
"It was thanks to the great vigilance of my dermatologist that the melanoma was detected when it was.
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"Naturally another cancer diagnosis has been a shock but I’m in good spirits and grateful for the many messages of love and support.
"I believe my experience underlines the importance of checking the size, shape, colour and texture and emergence of new moles that can be a sign of melanoma and urge anyone who is reading this to be diligent.
"I am incredibly thankful to the medical teams that have supported me through both of these experiences with cancer and to the MAYRLIFE Clinic for taking gentle care of me in the past weeks, allowing me time for recuperation.
"I am resting with family at home now, feeling blessed to have their love and support."