The Prince Of Wales And The Duchess Of Cornwall Visit Washington, DC - Day 2 [Getty Images]

WASHINGTON, DC - MARCH 18: Prince Charles, Prince of Wales Camilla, Duchess of Cornwall tour the Dr. Martin Luther King Jr. Memorial March 18, 2015 in Washington, DC. Prince Charles, and his wife Camilla, Duchess of Cornwall are on a four day visit to the US. (Photo by Mark Wilson/Getty Images)

Getty Images Entertainment Mark Wilson