$9million wedding for Facebook's first president

Sean Parker, the first president of Facebook, has married his singer girlfriend in one of Silicon Valley's most extravagant weddings.

Napster co-founder and Facebook founding president Sean Parker (R) and Alexandra Lenas

The nuptials, which reportedly cost $9 million, took place in the coastal retreat of Big Sur, California in front of 300 guests.

Parker, 33, had been rumoured to be planning a themed event, based on the television series Game of Thrones, for his wedding to Alexandra Lenas.

However, before the ceremony he said: "Sorry to disappoint, but the wardrobe we're giving guests is essentially modern. No swords or chain mail. This is not a 'theme' wedding."

The scene did reportedly resemble a Hollywood set with landscapers spending weeks building fake waterfalls, ruins and backdrops, and a $600,000 stone gate.

According to People magazine a temporary dance floor reportedly cost $350,000, and the bill for flowers and plants came to $1 million.

The couple's infant daughter Winter Victoria and the guests were dressed by Oscar-winning costume designer Ngila Dickson, known for her work on The Lord of the Rings films.

Parker's representative described it as a "romantic, magical setting," Forbes has estimated the wealth of Parker, who also co-founded music sharing site Napster in 1999, at $2 billion.

He was portrayed by Justin Timberlake in the 2010 movie "The Social Network".