A Russian billionaire reportedly paid Mariah "over seven figures" to perform at his granddaughter's wedding in London this past Saturday.
From the videos posted online, it seems like she was performing live. She dedicated "We Belong Together" to the couple, and also sang "My All" and "It's Like That". It's probably a safe bet that Dick Clark Productions wasn't involved.
And she wasn't even the only celebrity there. Elton John also performed, Mark Ronson DJed, and Antonio Banderas gave some sort of speech. Here are some videos from inside the weddings which I'm sure was super-lame and I'm happy that we weren't invited because I'm sure it was boring.