As he watched his mother lose her royal titles, 14-year-old William told Diana, “When I become King, I will give everything back to you.”

Princess Diana, then 20 years old, married Prince Charles, then 32, in what was dubbed the “wedding of the century” on July 29, 1981.

Diana transitioned from Lady Diana Spencer to Princess of Wales with the slipping of her wedding ring onto her finger, a title that would allow the entire world to appreciate her lovable character but also put her marriage through years of strife and compelled her to conform to a plethora of royal demands.