But it's understood that both Carole and her husband, Michael, have been supporting their daughter Kate and Prince William and their children during this time.
"The Middletons are a really close family and Carole is a very hands-on grandmother, and I'm sure she will be at the helm. She often picks the kids up," Ingrid Seward, editor in chief of Majesty magazine, previously told HELLO!.
Speaking on Giovanna Fletcher's podcast, Happy Mum, Happy Baby, in 2020, the Princess said: "I had a very happy childhood. It was great fun, I'm very lucky, I've come from a very strong family - my parents were hugely dedicated to us, my siblings. I really appreciate now as a parent how much they sacrificed for us.
"They would come to every sports match - I was very keen on sport - they came to every sports match, they'd be the ones on the side-line shouting, and we'd always have our family holidays together."
WATCH: Kate blows kiss to her parents at Wimbledon 2022
Carole and Michael are grandparents to William and Kate's three children Prince George, Princess Charlotte and Prince Louis, as well as Pippa and James Matthews' little ones, Arthur, Grace and Rose.
They welcomed their seventh grandchild when James Middleton and Alizee Thevenet had baby Inigo last year.
As Carole celebrates her birthday, take a look at some of her sweetest mother-daughter moments with Kate over the years…
Carole and Michael joined William, Kate and their friends at a church service on the Sandringham estate in January 2020. Their outing took place just days before Kate's 38th birthday.
Mum Carole showed her support for her daughter as she and husband Michael, and their two youngest children, Pippa and James, attended Kate's Christmas carol concert at Westminster Abbey in December 2021.
Photographers captured this moment of the then Duchess looking over at her family as they proudly watched.
The Middletons were also among the guests at the carol concert last year and in 2022.
William and Kate joined the Middletons in Bucklebury for Christmas, attending the church service with their two eldest children, Prince George and Princess Charlotte.
Carole beamed proudly as her toddling granddaughter made her way down the steps, holding her mum's hand and a candy cane.
Carole and Kate had a girls' day out while Christmas shopping in London in 2005.
Prince William and his then girlfriend had just graduated from the University of St Andrews.
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