LOOK

Prince William is a happy dad in photo shared by Duchess Catherine on his birthday

Prince William isn't only celebrating Father's Day — he is also celebrating his 38th birthday!

The occasion has the Duchess of Cambridge sharing an adorable photo of the Duke with their three children, Prince George, Princess Charotte, and Prince Louis, on a swing, looking happy and content.

The photo was taken by Kate no less, earlier this month.  

Happy birthday and Happy Father's Day to Prince William! — LA, GMA News