Prince William and Princess Kate have shared an adorable new portrait of Prince Louis as he celebrates his birthday.

Kate Middleton and Prince William have shared a new photo of their youngest son Prince Louis in honor of his 6th birthday Tuesday. The Prince and Princess of Wales took to social media to share a ...

with Prince Archie and Princess Lilibet, now 2. A source told PEOPLE ahead of Archie's fourth birthday that a "low-key" party was planned at the family's home. "They'll have friends around them ...