With a theme that focused on Rei Kawakubo's inimitable, over-the-top designs for Comme des Garçons, you can be sure this year's Met Gala red carpet was filled to the brim with jaw-dropping looks. Co-host Katy Perry's wardrobe is costume-like to begin with, and what fun would it be if the supermodels, designers, and stars didn't follow in her footsteps? Scroll to see how everyone showed up to the ball, all to celebrate fashion as an art form — literally.