Photo: Getty Images1/8Rainier III, Prince of Monaco and Grace Kelly on their wedding day April 19, 1956.
Photo: Getty Images2/8Rainier III, Prince of Monaco and Grace Kelly during their wedding ceremony, April 19, 1956.
Photo: Getty Images3/8Caroline, Princess of Hanover and Philippe Junot on their wedding day, June 29, 1978.
Photo: Getty Images4/8Caroline, Princess of Hanover and Stefano Casiraghi during their wedding ceremony, December 29, 1983.
Photo: Getty Images5/8Caroline, Princess of Hanover and Prince Ernst August of Hanover on their wedding day, January 23, 1999.
Photo: Getty Images6/8Princess Stéphanie of Monaco and Daniel Ducruet on their wedding day, July 1995.
Photo: Getty Images7/8Albert II, Prince of Monaco and Charlene Wittstock on their wedding day, July 2, 2011.
Photo: Getty Images8/8Pierre Casiraghi and Beatrice Borromeo on their wedding day, July 25, 2015.