Pippa and Carole Middleton are set to help Prince William with Prince George, Princess Charlotte and Prince Louis, a royal commentator has claimed.
The Princess of Wales has spent over a week in hospital due to "planned abdominal surgery", and is expected to stay there for a total of between 10 and 14 days.
Prince William, 41, has halted royal duties for the time being and is taking care of the three Wales children at their home in Adelaide Cottage.
He also has an important family network nearby in Berkshire through Carole and Pippa Middleton.
Kate has been in hospital for over a week
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Kate's mother and father live in Bucklebury, which is a 40-minute drive away from Adelaide Cottage.
Meanwhile, Pippa and her husband James Matthews live in Berkshire with their three children.
Ingrid Seward, editor-in-chief of Majesty Magazine, said: "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.
"Pippa has children of her own now, but I'm sure she will help by offering to have the kids round for tea and that kind of thing."
Carole and Michael Middleton live a 40-minute drive away from Adelaide Cottage
PASeward continued to tell Hello Magazine: "William is incredibly supportive as a husband.
"It's pretty unusual for the Prince of Wales to cancel engagements because his wife isn't well – that certainly wouldn't have happened in the past – but he's a modern man whose family is more important to him than anything else."
The Prince of Wales is known to get on very well with the Middleton family.
Carole, 68, enjoys taking her seven grandchildren on fun outings such as to the local petting zoo and on bike rides.
Pippa Middleton also lives in the Berkshire area
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Prince William is currently taking care of the three Wales children at Adelaide Cottage
PADescribing herself as a "hands-on" grandmother, Carole said: "I want to run down the hills, climb the trees and go through the tunnel at the playground."
She continued to tell Good Housekeeping: "As long as I am able to, that's what I'll be doing.
"I cook with them, I muck around dancing, we go on bike rides."
Meanwhile, Pippa, 40, tied the knot with James Matthews in 2017 and has three children, Arthur, five, Grace, two, and Rose, one.