If Taylor Swift [1] was on Katy Perry [2]'s mind, she showed no signs of it at the 2017 MTV VMAs [3]. The star first walked the blue carpet in a Stéphane Rolland gown, smiling as she posed for the cameras. The one-shoulder dress featured a cutout in the middle and clean, sculptural lines at the hem. This sexy dress, however, was just the beginning of several outfit changes for the host. Katy wore everything from a space suit to a silver, body-hugging gown. The singer had nothing to worry about (at least in the style department) because her looks set her up for best dressed of the night [4]. Read on to see all her outfits.