The Princess of Wales is celebrating her nephew Arthur Matthews' 6th birthday today, marking a joyous occasion for the close-knit Middleton family. Kate has a strong bond with her younger siblings, Pippa Matthews,

Kate Middleton’s relationship with Prince William was life-changing not only for her, but also for her entire family. In his new memoir, “Meet Ella: The Dog Who Saved My Life,” Kate’s brother, James Middleton,

Kate Middleton is set to attend her first big event and celebrate with her family following the conclusion of her cancer treatment.The Princess of Wales, who shares a close bond with her

Even royals have playdates. According to James Middleton, now that he’s a father to son Inigo, he regularly spends weekends with his sisters, Kate and Pippa Middleton, to get their respective children together.

James Middleton shares in his new book, "Meet Ella," how his sister, Catherine, Princess of Wales, told him and sister Pippa she was engaged to Prince William.

The Middleton family typically wrapped up group dinners with the fast-paced card game Racing Demon. It was, according to James, perhaps a little too demonic for William. The young royal would find convenient excuses to opt out of the competition.

Kate Middleton and Prince William, the Prince and Princess of Wales, married in 2011. They share three children: Prince George, Princess Charlotte and Prince Louis.

Kate Middleton has been seen wearing her stunning sapphire engagement ring at public events, but it was noticeably absent during her recent outing in Southport, England

Princess Kate and Prince William seemed to have a picture-perfect relationship, but it wasn't always easy sailing between the two.

Prince William and Kate Middleton have been happily married for more than 10 years, but their relationship hasn't always been plain sailing - with one notable blip in 2007