Earlier the same day the couple shared a new family picture of William and Kate lying in a field with their three children — Prince George, 12; Princess Charlotte, 10; and Prince Louis, 8 — captioned “Celebrating 15 years of marriage ❤️.”
The couple first met at the University of St. Andrews, dated on and off, and became engaged in 2010. Their wedding at Westminster Abbey on April 29, 2011 was watched around the world and attended by about 1,900 guests.