Kim Kardashian and Kris Humphries' wedding was a star-studded, made for TV event that included a vast number of celebrity guests, but one in particular, that Kim's mom Kris wanted to perform, didn't.
The "who" is Christina Aguilera, and the "why" was do to money. She was commanding $1 Million to sing at the affair.
Via SheKnows Kris refused to pay that much.
Come on Kim commands crazy numbers just to show her face at an event and she doesn't even sing... lol