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TOKYO - JUNE 9: (FILE PHOTO) In this handout photo from the Imperial Household Agency, Crown Prince Naruhito (2nd from L) of Japan and his wife Crown Princess Masako (2nd from R) pose with Emperor Akihito and Empress Michiko after their wedding at the Imperial Palace June 9, 1993 in Tokyo. Crown Prince Naruhito and Crown Princess Masako will mark their 11th wedding anniversary on June 9, 2004. (Photo by Imperial Household Agency/Getty Images)

TOKYO - JUNE 9:  (FILE PHOTO) In this handout photo from the Imperial Household Agency, Crown Prince Naruhito (2nd from L) of Japan and his wife Crown Princess Masako (2nd from R) pose with Emperor Akihito and Empress Michiko after their wedding at the Imperial Palace June 9, 1993 in Tokyo. Crown Prince Naruhito and Crown Princess Masako will mark their 11th wedding anniversary on June 9, 2004. (Photo by Imperial Household Agency/Getty Images)

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TOKYO - JUNE 9: (FILE PHOTO) In this handout photo from the Imperial Household Agency, Crown Prince Naruhito of Japan and his wife Crown Princess Masako bow to Emperor Akihito and Empress Michiko during a ceremony to greet them at their wedding at the Imperial Palace June 9, 1993 in Tokyo. Crown Prince Naruhito and Crown Princess Masako will mark their 11th wedding anniversary on June 9, 2004. (Photo by Imperial Household Agency/Getty Images)

TOKYO - JUNE 9:  (FILE PHOTO) In this handout photo from the Imperial Household Agency, Crown Prince Naruhito of Japan and his wife Crown Princess Masako bow to Emperor Akihito and Empress Michiko during a ceremony to greet them at their wedding at the Imperial Palace June 9, 1993 in Tokyo. Crown Prince Naruhito and Crown Princess Masako will mark their 11th wedding anniversary on June 9, 2004. (Photo by Imperial Household Agency/Getty Images)

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TOKYO, JAPAN: The newly wed Crown Prince Naruhito (L) and his wife, Crown Princess Masako pose for photographs 09 June 1993 after their wedding ceremony at the Tokyo Imperial Palace. (Photo credit should read TOSHIFUMI KITAMURA/AFP/Getty Images)

TOKYO, JAPAN:  The newly wed Crown Prince Naruhito (L) and his wife, Crown Princess Masako pose for photographs 09 June 1993 after their wedding ceremony at the Tokyo Imperial Palace. (Photo credit should read TOSHIFUMI KITAMURA/AFP/Getty Images)

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TOKYO - JUNE 9: (FILE PHOTO) In this handout photo from the Imperial Household Agency, Crown Prince Naruhito of Japan and his wife Crown Princess Masako leave the Imperial Palace after their wedding June 9, 1993 in Tokyo. Crown Prince Naruhito and Crown Princess Masako will mark their 11th wedding anniversary on June 9, 2004. (Photo by Imperial Household Agency/Getty Images)

TOKYO - JUNE 9:  (FILE PHOTO) In this handout photo from the Imperial Household Agency, Crown Prince Naruhito of Japan and his wife Crown Princess Masako leave the Imperial Palace after their wedding June 9, 1993 in Tokyo. Crown Prince Naruhito and Crown Princess Masako will mark their 11th wedding anniversary on June 9, 2004. (Photo by Imperial Household Agency/Getty Images)