
Sir Elton John and Mariah Carey were paid millions to sing at a Russian oligarch's 19-year-old granddaughter's ridiculously lavish wedding at the weekend.

The superstars headlined a star-studded bill of performances at the extravagant party after Irene Kogan, the granddaughter of businessman Valery Kogan, wed groom Daniel Kevey on Saturday.

Mariah Carey is said to have been paid £2.5million to fly in from the US and sang ballad We Belong Together to them at London's Landmark Hotel, where the Presidential Suite costs £1,450-a-night.

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Sir Elton John and Mariah Carey (pictured) were paid millions to sing at a Russian oligarch's 19-year-old granddaughter's wedding

Elton John, who does not play for less than £1million, opened the bill with a 12-song set at the incredibly lavish wedding

The superstars headlined an incredibly lavish day of extravagance for Irene Kogan, the granddaughter of businessman Valery Kogan, and her groom Daniel Kevey (pictured together)

The night ended with a DJ set from the producer Mark Ronson, pictured with Irene Kogan, who shared this image with millions of followers on his Instagram account

Elton John stands up from the piano to sing to the crowd at the star-studded event in London

Antonio Banderas, who now lives in London, pictured at the wedding, where there were around nine hours of performances

Images taken earlier of the ceremony show the bride in her beautiful white dress, having the ring slipped on her finger in the hall, with white curtains cascading down from the ceiling either side of her and the groom

Irena wearing a dress by Ralph & Russo, Britain's most exclusive fashion brand, which has been worn by princesses from Qatar and Saudi Arabia, and Beyonce

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, reports The Sun.

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.

A number of Russian stars also performed and the night ended with a DJ set from producer Mark Ronson.

The bride wore a dress by one of Britain's most exclusive fashion brands, Ralph & Russo, the brand that made Cheryl Cole's famous black wedding gown.

The fashion house also boasts clients including Beyonce and Angelina Jolie, who wore one of their dresses to meet the Queen.

Mariah Carey is said to have been paid £2.5million to fly in from the US and sing ballad We Belong Together to the couple

Irene Kogan continues to dance with the singer during the set at London's Landmark Hotel

As Mariah stretched her vocal cords, the bride stretched her legs and danced with her on stage at the incredibly lavish wedding, and guests captured the moment on camera

Dresses from the designer, which was the first in 100 years to be allowed to display its collection at Paris Haute Couture Week, can cost up to $500,000 (£320,000).

Images show the couple cutting a huge cake, standing at least ten foot off the ground, during the incredibly luxurious party.

Guests shared images of the menu on social media, a nine-course feast including seared sea bass with caviar, roasted fillet of dry aged beef and 'macerated pineapple'.

The guest list was a who's who of Russian high society, with the Russian elite from the music, fashion and acting worlds in attendance.

Mariah Carey, who made a number of costume changes throughout the night, performs in front of a large crowd at the private gig in London

Elton John's 12-song set reduced the bride to tears, leaving her crying on her husband's shoulder during the performance

The Hollywood actor Banderas holds the microphone with other guests who appeared to be either giving speeches or acting as MCs during the night

SEARED SEA BASS WITH CAVIAR AND 'MACERATED' PINEAPPLE: THE RIDICULOUSLY LAVISH WEDDING MENU ON OFFER FOR GUESTS OF THE SUPER-RICH Salad of heritage beetroot, goat's cheese, baby mizuna and candied walnuts Tartare of yellow fin tuna, chilli, picked cucmber and lemon dill Risotto of wild mushrooms and tarragon Seared sea bass, baby spinach, oscietra caviar sauce Roasted maize-fed chicken breast, herbs, puy lentils, truffle sauce Roasted fillet of dry-aged beef, gratin potato, smoked shallot puree, tenderstem broccoli, chantenay carrots, hermitage sauce Macerated pineapple, five spice, rum, lime yoghurt sorbet Pear and pistachio bakewell, chocolate genache, vanilla sauce British cheeseboards, chutney, quince and breads Pictures from the day show the luxurious menu offered to guests, including tuna, risotto, sea bass with caviar and fillet of beef Advertisement

Antonio Banderas, whose name is pictured on the wedding favours on one of the tables, gave a speech wishing the couple well on Saturday

As Maria finished her set, Irene appears to thank her in front of the hundreds of guests

The US singer dedicated the 2005 ballad We Belong Together to the newlyweds and even held the bride's hand on stage at one point

The 19-year-old couple share a romantic kiss on the dancefloor during the wedding in London, as guests can be seen cheering in the background

This image shows the huge trail of the Ralph & Russo dress, the same exclusive British brand that made Cheryl Cole's famous black wedding gown

Some of the Russian stars to perform include Stas Mikhailov and Filipp Kirkorov, who are little-known in the UK but have sold millions of albums in Russia.

Also in attendance was opera star Anna Netrebko, an operatic soprano who performs all over the world.

Regina von Flemming, an internationally known businesswoman and former media mogul, was another of the influential guests

Images posted by guests show dancers in Brazilian-style dress with massive feather costumes and Russian models posing as though it is a red carpet.

The bride's 65-year-old Russian-Jewish grandfather is one of the richest men in Russia with a net worth said to be worth around $2billion (1.6billion).

Antonio Banderas (left), the Hollywood actor, posing with a guest, and one of the glamorous women at the lavish ceremony (right), drinking Champagne

One of the many well-dressed guests enjoying the party at the Landmark Hotel in London on Saturday (pictured)

The guests pictured on dressed chairs for the ceremony between Irene and Daniel Kevey. A camera crew can be seen holding microphones in the background

RUSSIAN OLIGARCH WORTH £2BILLION HAS SOME OF THE WORLD'S MOST LUXURIOUS PROPERTIES Valery Kogan is one of the richest men in Russia and is thought to have made his fortune by investing in Moscow's Domodedovo Airport, Valery Kogan is one of the richest men in Russia and is thought to have made his fortune by investing in Moscow's Domodedovo Airport, the largest in Eastern Europe. He is thought to be worth around £2billion and has hit the headlines for his penchant for ridiculously luxurious properties both in Israel and the US. The Russian-Jewish businessman infuriated neighbours in Greenwich, Connecticut, when he applied for planning permission to raze the 20,000 sq ft property they bought in 2005 to the ground and build a new one. Described as 'the most ostentatious mansion in Greenwich', he eventually had to abandon plans for the 54,000 sq ft mansion and submit scaled down versions of the plans for the house, worth a reported $18million (£14.9million). But it is nothing compared to the immense property he is building in Israel, dubbed the nation's most expensive estate. Experts estimate that it is worth at least $100 million (£83million) and features include $570,000 (£472,000) of gold leafing, a 10,800 sq ft entry hall with glass dome to view the night sky, a 10-car underground garage and a $2million (£166million) solid gold entry gate. It is designed to look similar to the White House in Washington. Kogan, the Russian billionaire famous for his ostentatious properties in the US and Israel, pictured with his wife Olga Advertisement

A photo of four of the guests during the wild party to celebrate the wedding on Saturday

Guests from the fashion world pose for the camera in this image posted by Russian fashion designer Igo Gulyaev

The guests at such a high society wedding wear only the best clothes and turn out looking pristine for the evening party

This guest, Esther Shenkman, arrives in chic dress and poses for the camera at the stunning venue in London

Russian singer Stas Mikhailov, a well-known recording artist in Russia, with wife and Iva Kanchelskis, wearing a fur coat, share an affectionate moment in front of the camera

More well dressed guests at the lavish party, posing in the hall where Sire Elton John and Mariah Carey sang earlier

Opera star Anna Netrebko (far right), an operatic soprano who performs all over the world, posing with other wedding guests

Regina von Flemming, an internationally known businesswoman and former media mogul, was one of the influential guests

He owns Moscow's Domodedovo Airport, the largest in Eastern Europe, with billionaire business partner Dmitry Kamenshchik.

In 2013, he invested £83million in building the most luxurious mansion in the nation, designed to look like the White House.

In 2011 he broke an Israeli real estate record when he bought a 1,000-square-meter apartment for a reported $31billion (£25million).

He also reportedly owns an $18million (£14.9million) mansion in Connecticut.