Y’all. This is the best thing Katy Perry has ever done. She Tweeted yesterday that she was going for the Best Worst Dressed list and that is EXACTLY WHAT THIS IS. She and Riff Raff here (not of Rocky Horror fame, sadly) are BRITNEY AND JUSTIN from the 2001 VMAs. This is hilarious and it is delightful, and I desperately hope there was a dance off later in the evening.

[Photos: Getty, Fame/Flynet]