All eyes were on Nicky Hilton as she and her beau, James Rothschild, said "I do" at the Orangery in Kensington Palace.
According to Daily Mail, James Rothschild is one of the heirs to the British banking dynasty with a fortune purportedly valued at £12 billion. The wedding united two of the wealthiest dynasties in the world, with Nicky Hilton being an heir to her father's international hotel business.
With big bucks flowing from both sides, Nicky Hilton and James Rothschild's wedding was an extravagant event of royal proportions. The lavish wedding was attended by various big wigs including Chelsea Clinton, James and Petra Stunt, and Thomas van Straubenzee who was chosen to be Princess Charlotte's godfather last week.
Some royalties were also spotted at the pre-wedding bash at Harry's bar the night before the wedding which was attended by Princess Beatrice's boyfriend Dave Clark, as well as Crown Prince Pavlos and Crown Princess Marie Chantal of Greece.
With Nicky Hilton and James Rothschild, both 31 years old, tying the knot, is Nicky's older sister and chief bridesmaid Paris Hilton jealous that her younger sister got to walk down the aisle first?
It could be unlikely especially since Paris Hilton is reportedly building a fairy tale love story of her own.
According to Hello! Magazine, the 35-year-old hotel heiress has her own filthy-rich boyfriend - no other than Austrian businessman Thomas Gross with an estimated net worth of £120m.
In fact, Paris Hilton reportedly brought Thomas Gross as her date at Nicky's wedding. The former "Simple Life" star also reportedly introduced Thomas Gross to her parents, Richard and Kathy Hilton before her sister's big day.
"They had dinner with her family in Los Angeles last week," a source reportedly told Daily Mail. "Her mother Kathy really liked him and was telling everyone that she is happy her daughter has met such a great match."
"I've never seen her happier since she met Thomas," a friend of Paris Hilton reportedly dished out. "They are inseparable and constantly travel together around the world. She recently went on his jet from Cannes to Cabo, to Ibiza then New York and LA and then Vegas. Now they are in London for her sister Nicky's wedding and look completely in love."