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The Dutch and Sweedish Royal families are pictured in the Noordeinde Palace in The Hague, on April 21, 2009 (L to R, bottom row) Queen Silvia of Sweden, King Carl XVI Gustav of Sweden and Dutch Queen Beatrix (L to R, top row) Prince Willem Alexander of the Netherlands, Princess Maxima of the Netherlands and Dutch Professor Pieter van Vollenhoven, who is married to one of Queen Beatrix's sisters. ANP ROYAL IMAGES LEX VAN LIESHOUT netherlands out - belgium out (Photo credit should read Lex Lieshout/AFP/Getty Images)

The Dutch and Sweedish Royal families are pictured in the Noordeinde Palace in The Hague, on April 21, 2009 (L to R, bottom row) Queen Silvia of Sweden, King Carl XVI Gustav of Sweden and Dutch Queen Beatrix (L to R, top row) Prince Willem Alexander of the Netherlands, Princess Maxima of the Netherlands and Dutch Professor Pieter van Vollenhoven, who is married to one of Queen Beatrix's sisters. ANP ROYAL IMAGES LEX VAN LIESHOUT  netherlands out - belgium out (Photo credit should read Lex Lieshout/AFP/Getty Images)