Pippa Middleton Matthews, Princess Kate's “angel and backbone” during this difficult time.

As important as the Princess of Wales' decision to take her only daughter, Princess Charlotte, to Wimbledon this past Sunday was, so was Kate's decision to keep her sister, Pippa Middleton Matthews, by her side.

“They were already genuine best friends, but this grueling year has brought them even closer together,” a source told the Daily Express. Pippa is like an angel to Catherine and has her back. Pippa is like an angel and a backbone to Catherine. But what is invaluable to Catherine is the emotional support she provides."

[4 [The “unbreakable” bond between the sisters has been compared to another pair of sisters who shared a similar closeness, the late Queen Elizabeth and Princess Margaret.

“Like the bond shared between the Queen and Princess Margaret, they are genuine best friends who understand each other and whom Princess Catherine can truly trust. And like Princess Margaret, Pippa is the more outgoing of the two sisters, which only enhances her ability to support her sister in her royal role.”

They are only 21 months apart, and as children, the Daily Express writes, they “bonded over their shared love of exercise and sports, despite being students at Marlborough College.”

In their 20s, the two were regulars at Chelsea socials, and in 2011, Kate The Mirror reports that “the pair were often spotted out at night together at popular London hotspots such as Mahiki and Boujis. After William proposed to Kate, she wasted no time in asking her sister to be her bridesmaid in 2011."

The report also states.

A source told the Daily Mail at the time, “[Pippa] is Kate's closest ally and genuinely her best friend, so it's Kate, Kate, Kate for now. But even if she wasn't, Kate would have a hard time trusting anyone outside of her family.”

In a previous NBC interview, Pippa said of her sister, “I mean, obviously she has pressures and things that she has to carry. But we do spend a lot of time together. We still spend a lot of time together as a family. We are like normal sisters. We are very close. And we support each other and listen to each other."

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After Pippa, her husband James Matthews, and their children Arthur, Grace, and Rose moved to the Berkshires, the sisters grew even closer, and after Kate was diagnosed with cancer earlier this year, “Pippa was more than a shoulder to cry on.

The Middleton family of five--sisters Kate and Pippa, brother James, and parents Michael and Carol--are all famously close. “The three siblings are incredibly close,” a source told The Times. “Pippa is not only my sister, but also my best friend, with whom I can confide. They are very loyal to each other."

”They are very close to each other.

James wrote a touching message on Instagram just hours after Kate announced on March 22 that she was undergoing treatment for cancer. It read, “As a family, we will climb this mountain with you.”

Kate and Pippa's closeness convinces us why she wants Pippa by her side at Wimbledon, her second public appearance in 2024. As for William, he is famously estranged from his brother Prince Harry, his only sibling, but according to Us Weekly, his older cousin Zara Tindall is the “big sister” that William never had, and sources say that Princess Anne's only daughter is close to her uncle, Prince Charles They add. Princess Anne's only daughter is also close to her uncle, Prince Charles. 'Zara is a breath of fresh air. She's fun and unpretentious, and the public loves her.”

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