Among the lucky invitees were sometime-reality starlet Paris Hilton and her sister Nicky who partied alongside Sarah Ferguson and Princesses Eugenie and Beatrice to performances by Eric Clapton and the Black Eyed Peas at the reception.
$386, 550 was spent on gifts for the wedding party, $232, 000 on food and Ecclestone paid celebrated chef Alain Ducasse $216, 000 for the night.
Croatian heiress Petra Ecclestone has reportedly spent $5 million on a Roman ceremony this weekend which wedded her to businessman James Stunt.
The Ecclestone-Stunt wedding took place Saturday at the same castle where Tom Cruise and Katie Holmes married, and featured fireworks as well as performances by Eric Clapton and the Black Eyed Peas, according to People magazine.
Like Kardashian, Ecclestone wore Vera Wang - a custom-made $130,000 gown. Like Middleton, Ecclestone invited Britain's Princesses Beatrice and Eugenia as her guests. Online, the multi-day affair also included a caviar and Cristal pre-wedding dinner with entertainment by Alicia Keys.
Ecclestone, a 22-year-old fashion designer, is the daughter of former Armani model Slavica and Formula One racing chief executive Bernie Ecclestone.