In case you missed it, King Charles rang in his first birthday as England's new monarch yesterday, and Prince William and Kate Middleton marked the occasion with a special tribute on Instagram.
The Prince and Princess of Wales posted a sweet message to the royal, who turned 74, on their Instagram Story and wrote, "Wishing a very happy birthday to His Majesty the King." They also included a fun photo of the king, who's smiling at what appears to be a public engagement.