Prince William, Kate Middleton and their kids put on a united front during the holidays. Not only did they steal the show at Princess Catherine’s Christmas concert, but they also wore coordinating blue-and-green outfits on Christmas Day.

Although the plans for Princess Kate’s birthday are not yet known, it is likely the mum of three will celebrate at home with Prince William, 42, and their three children Prince George, 11, Princess Charlotte, nine, and Prince Louis, six.

Princess Kate and Prince William have navigated a "brutal" year while parenting three young children. The Princess of Wales spent two weeks in hospital in January after undergoing significant abdominal surgery at the London Clinic.

Royal author Christopher Andersen told Fox News that Middleton and Charles have "strengthened their bond" over "their shared cancer battle ," and the king is "so impressed with her grace and grit" that he even honored Middleton with a Royal Companion of Honour,

That, of course, was followed by the shock of her cancer diagnosis, so this will be the perfect opportunity to celebrate." Jennie added that Prince William "isn't exactly known for his overtly public displays of affection or romantic gestures,

"Father and son don’t always see eye to eye." Kate Middleton is the saving grace of the monarchy in more ways than one. In addition to pushing through her cancer diagnosis and showing up at royal events while she received chemotherapy,