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©2010 RAMEY PHOTO US ONLY Madrid, Apr. 28, 2010 The Dutch prince WILLEM ALEXANDER and his wife princess MAXIMA ZORREGUIETA walk in front of Castle Duivenvoorde in Voorschoten, The Netherlands on 28 April 2010. The royal couple opened the exhibit Tijdloos Trendy (Forever Trendy). The exhibit is one of the activities of the 50th anniversary of the Duivenvoorde foundation. PGta68 (Photo by Philip Ramey/Corbis via Getty Images)

©2010 RAMEY PHOTO US ONLY Madrid, Apr. 28, 2010 The Dutch prince WILLEM ALEXANDER and his wife princess MAXIMA ZORREGUIETA walk in front of Castle Duivenvoorde in Voorschoten, The Netherlands on 28 April 2010. The royal couple opened the exhibit Tijdloos Trendy (Forever Trendy). The exhibit is one of the activities of the 50th anniversary of the Duivenvoorde foundation. PGta68 (Photo by Philip Ramey/Corbis via Getty Images)