Prince William and his wife Catherine Middleton, now the Duchess of Cambridge, kiss on the balcony of Buckingham Palace, following their wedding at Westminster Abbey in London on April 29.
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Prince Charles and his new bride Diana kiss on the balcony of Buckingham Palace after the royal wedding in London on July 29, 1981.
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The Duke and Duchess of York kiss on the balcony of Buckingham Palace on their wedding day on July 23, 1986.
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Just-married Dutch Crown Prince Willem-Alexander receives a kiss from his new wife Maxima on the balcony of the Royal Palace in Amsterdam on their wedding day on February 2, 2002.
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Prince Joachim of Denmark kisses Marie Cavallier at their wedding in the Mogeltonder church in south Jutland, Denmark, on May 24, 2008.
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Norway's Princess Maertha Louise and her groom, Ari Behn, kiss outside Trondheim Cathedral at their wedding on May 24, 2002.
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Louisa Gouliamaki/AFP Photo/Newscom/File
Tatiana Blatnik and Nicolas, second son of Greece's former King Constantine, kiss while leaving the orthodox Church of Saint Nicolas after their wedding ceremony on the island of Spetses on Aug. 25, 2010.
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Odd Andersen/AFP Photo/Newscom/File
Crown prince Frederik and Crown princess Mary of Denmark kiss on the balcony at Amalienborg castle to the cheers of thousands in Copenhagen on May 14, 2004, after their wedding at Copenhagen's cathedral.
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Bride Tessy Antony and groom Prince Louis of Luxembourg kiss after their church wedding in Gilsdorf, Luxembourg, on Sept. 29, 2006.