Katy Perry is set to perform at YouTube Live on Saturday (November 22) at 5 PST/8 EST both in San Francisco and live streaming on YouTube.com. The pop singer discussed the concert over her laptop with her stylist from Paris, talking about what kind of outfits she’ll be wearing for the arrival, performance and afterparty. Katy said she’ll probably be performing with ‘Chocolate Rain’ singer Tay Zonday. Watch the conversation at YouTube.