Petra Ecclestone has married James Stunt in a lavish ceremony.

The Fashion designer - whose father is billionaire Formula One boss Bernie Ecclestone, who is worth a reputed $4 billion - tied the knot with the businessman at Odescalchi Castle near Lake Bracciano in Italy on Saturday (27.08.11), where guests included Paris Hilton and her sister Nicky.

Britain's Sarah Ferguson also attended the 22-year-old bride's ceremony - which is thought to have cost around $7.7 million - alongside her daughters Princess Eugenie and Princess Beatrice, and they partied to performances by Eric Clapton and the Black Eyed Peas for around 350 guests.

A source told E!: "No one had ever seen anything like it. Everything was done to perfection with no expense spared. It was the wedding of the century fit for a princess!"

The Italian castle was also used by Hollywood stars Tom Cruise and Katie Holmes when they got married in 2006.