For a man who has made billions from encouraging the world to share, it was a very private event. Facebook founder Mark Zuckerberg married his girlfriend of nine years on Saturday – in a ceremony so secret that even the guests did not know they would be attending a wedding. They turned up at Zuckerberg’s £4.5million home in Palo Alto, California, thinking they were there to celebrate Priscilla Chan’s graduation from her degree in paediatrics. True love: Priscilla Chan, the new Mrs Mark Zuckerberg, was walked down the aisle last Saturday by the couple's dog Beast, a Hungarian sheepdog. The couple also wrote their own vows
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Guests were told party was meant to celebrate Chan's graduation
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Comes just one day after Facebook went public in mammoth IPO
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Green Day frontman Billie Joe Armstrong performed at the wedding
Mr @placeholder told guests he wrote the song for his own wife.