When Kate Middleton celebrated her 43rd birthday on January 9, her husband Prince William wrote a tender message and shared it on the couple’s public Instagram account. According to royal expert Ingrid Seward of Majesty magazine, the display of affection was a sign that the couple has grown closer following Kate's cancer diagnosis in early 2024.

Kate Middleton and Prince William are "more open" and "talk about their relationship together" amid her cancer journey, a source tells PEOPLE.

Prince William issues a new portrait and heartfelt message to wife Kate Middleton as she marks her 43rd birthday, writing "we love you"

After Kate Middleton spent most of last year receiving cancer treatment away from the spotlight, Prince William kicked off 2025 with a public birthday post as his wife turned 43 o

The Prince of Wales posted a birthday message for his wife, Catherine, Princess of Wales to social media on Thursday to celebrate her 43rd birthday.

The Prince and Princess of Wales have led tributes to celebrate the Duchess of Edinburgh’s milestone 60th birthday. Sophie, who joined the royal family more than 25 years ago upon her marriage to Prince Edward, marked the occasion privately on Monday at home with her husband, the Duke of Edinburgh.

Prince William. “To the most incredible wife and mother. The strength you’ve shown over the last year has been remarkable. George, Charlotte, Louis and I are so proud of you. Happy Birthday, Catherine.

The Prince of Wales wrote that he and the couple’s three kids — Prince George, Princess Charlotte and Prince Louis — “are so proud” of Middleton.

A source close to the royal family commented on the pair's marriage following Middleton's latest health update.