King Charles posted a photo of him as a boy with Queen Elizabeth on the royal family's official Instagram to mark U.K. Mother's Day on Sunday, March 30.

Princess Diana and the then-Prince Charles sat down with their new baby for a family portrait ... one camera was black and white, one camera was colored, that's it." "They came in the room ...

Queen Elizabeth and Prince Charles marked Prince William's ... On Instagram, the royal family shared a black and white throwback photo of a young Prince William as well as a series of Prince ...

The black-and-white photo showed then Prince Charles as a boy sitting next ... with a picture of then-Princess Elizabeth holding a baby Charles in her lap, following an undated shot of Queen ...