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AUSTRIA - MAY 01: A Museum Is Devoted To Empress Sissi In Hofburg Palace. On May 1, 2004 In Vienna (Austria), Austria. Two Photographs Of The Dress Worn By Sissi The Day She Was Murdered. One Can See The Fabric Ripped Open By Lucheni'S Stabbing Weapon. (Photo by Jean-Francois DEROUBAIX/Gamma-Rapho via Getty Images)

AUSTRIA - MAY 01:  A Museum Is Devoted To Empress Sissi In Hofburg Palace. On May 1, 2004 In Vienna (Austria), Austria. Two Photographs Of The Dress Worn By Sissi The Day She Was Murdered. One Can See The Fabric Ripped Open By Lucheni'S Stabbing Weapon.  (Photo by Jean-Francois DEROUBAIX/Gamma-Rapho via Getty Images)