Too Much Money: Russian Billionaire Spends 3.5m Pound to Hire Mariah Carey and Elton John for Daughter's Wedding (Photos)

Mariah Carey singing at the Russian oligarch's 19-year-old granddaughter's wedding 

Legendary singer, Sir Elton John and Mariah Carey, headlined a star-studded bill of performances at an extravagant party just after Irene Kogan, the grand-daughter of billionaire businessman, Valery Kogan, tied the knot with her groom, Daniel Kevey on Saturday.

The couple during their wedding It was gathered that the Russian oligarch forked out a staggering £2.5million on just getting Mariah Carey to fly in and sing, 'We Belong Together' at his teenage granddaughter’s ridiculously lavish wedding held at London's Landmark Hotel, where the Presidential Suite costs £1,450-a-night, at the weekend.

According to Dailymail, the bride is said to have wept when Sir Elton, who charges no less than £1million, dedicated the song, 'Tiny Dancer' to her during a 12-song set.

Sir Elton said: 'This is for Irene. She's not that tiny, but I know she's a really good dancer because I can see her down there.'

Actor Antonio Banderas, who now lives in London and recently dined with Prince Charles, also made a speech during the star-studded wedding, wishing the couple well.