Pippa and Carole Middleton are set to rally around Princess Kate, following the royal's cancer diagnosis.
The Princess of Wales, 42, announced she is undergoing preventative chemotherapy following major abdominal surgery in January.
Kate's parents, Carole and Michael Middleton, along with her siblings Pippa and James, have been supporting the royal's recovery at her cottage in Windsor, near their own homes.
In a video statement released on Friday, Kate said: "In January, I underwent major abdominal surgery in London and at the time, it was thought that my condition was non-cancerous.
Kate announced her cancer diagnosis on Friday
Getty
"The surgery was successful. However, tests after the operation found cancer had been present.
"My medical team therefore advised that I should undergo a course of preventative chemotherapy and I am now in the early stages of that treatment.
"This of course came as a huge shock, and William and I have been doing everything we can to process and manage this privately for the sake of our young family."
Kate was recently papped with her mother, Carole, in a car, which was her first sighting since Christmas Day in 2023.
Carole Middleton and Michael Middleton both live in BuckleburyPAThe photos were taken shortly before 9am, suggesting the mother and daughter duo were returning from the school run.
Carole and her husband Michael, 74, are known for their hands-on approach to being grandparents.
Kate's parents have been "brilliant", according to friends, at helping with Prince George, Princess Charlotte and Prince Louis.
They were a key part of Prince George's upbringing, with William and Kate immediately travelling to Bucklebury a day after leaving the Lindo Wing.
Pippa Middleton and her family recently travelled to the Caribbean
GettyMichael even oversaw the future King's first photoshoot in the garden a month later.
Meanwhile, Kate is famously close to her sister Pippa and chose her as a bridesmaid when she married Prince William in 2011.
She also relied on Pippa for her outing to Wimbledon with Meghan Markle in 2019.
The 40-year-old recently holidayed at Eden Rock Beach, which is owned by her husband James Matthews' family, in St Barts.
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Kate Middleton and Pippa Middleton attending Wimbledon in 2019
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Pippa and James, who married in May 2017, were seen enjoying some quality time with their three children, Arthur, five, Grace, two, and Rose, one.
The mother-of-three was seen running towards the shore with her daughter Grace.
She was also pictured holding hands with her son Arthur, who was wearing the same Spiderman-themed life jacket as his younger sister.