Inside Elite Russian Couple's 'Billion-Dollar' Wedding

The wedding band? J-Lo, Enrique and Sting.

— -- The son of Russian billionaire Mikhail Gutseriev got married this past weekend in what Russian media has been calling, "the most expensive wedding ever."

Said's father, Russian entrepreneur Mikhael Gutseriev, has a net worth is about $6.2 billion, according to Forbes. Though the exact cost of the festivities is unknown, it's safe to say the event didn't come cheap.

Here's what the wedding's reported 600 guests saw:

An entrance that looks straight out of a fairy tale

...complete with an entourage of Bentley's

Khadija Uzhakhova gracing guests with her presence in all her shimmering glory

Jeweled treasures galore...

A grand foyer complete with a flower-filled arch and fountain

A giant cake more than twice the bride's size

Live performances from J-Lo

... Enrique Iglesias

... And Sting

And to end the night with a bang, literally -- fireworks!

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