How cute?

Today, Prince Charles celebrates his 71st birthday - good for him. And to celebrate the future King's big day, members of the royal family have been paying tribute to him on social media. Prince Harry and Meghan Markle posted on their @SussexRoyal Instagram page, sharing a previously unseen snap. The image shows grandfather Charles admiring at his grandson, Archie Windsor, after his Christening ceremony at Windsor Castle in July. CUTE. The post was captioned: "Happy birthday to His Royal Highness The Prince of Wales - Sir, Pa, Grandpa!" So sweet, right? Three generations all in one picture. Of course, other members of the family have also shared birthday wishes to the Prince of Wales. Harry’s brother Prince William and Kate Middleton also paid tribute to Charles on social media with a photo of Prince Louis and Prince Charles. They wrote: "Wishing a very happy birthday to The Prince of Wales!" Prince Charles' brother, Prince Andrew, posted another baby picture, of himself being held by older brother good wishes. "Happy Birthday to The Prince of Wales!⁣⁣ ⁣⁣To mark HRH’s 71st Birthday, here’s photo from 1960 of the then Prince Charles holding a baby Prince Andrew.⁣⁣" The official account for the Queen, and the royal family, shared two snaps of Prince Charles. In one, he can be seen as an adult, donning a kilt. And in the second snap, we see a sweet family moment between a young Prince Charles and his parents. "Wishing The Prince of Wales a very happy birthday! ?? #HappyBirthdayHRH @clarencehouse"