If Taylor Swift was on Katy Perry's mind, she showed no signs of it at the 2017 MTV VMAs. 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. Read on to see all her outfits.