Kardashian, 34, wore a golden gown as she accompanied West to the ceremony, where he performed a tribute to their daughter and collaborated with Rihanna and Paul McCartney.
"He was the one that styled me tonight. He found this look from an older Jean Paul Gaultier runway show, so he made the call, called him and was like, 'She needs to wear this dress.' So, he styled it. It's all him," she said.
West said his wife's dress was the "best" part of his Grammys night.