Selena Gomez

The color red made a dramatic show Monday night in the grand parade of fashion at the Met Gala, including co-chair Katy Perry's look, as did glittery gold and blue feathers on the back of Blake Lively. But many of the evening's highlights were courtesy of luminaries who channeled honoree Rei Kawakubo, including Rihanna encased in fluttery petal-like pieces by the Japanese designer.