Singer Keri Hilson performing "Pretty Girl Rock" on The Late Show with David Letterman in a beaded feather Jovani Couture gown! And her backup dancers are wearing white Jovani cocktail dresses! Not to mention, the official music video features several Jovani dresses and military jackets. Follow Keri’s lead and look like a sexy, A-list performer when you choose Jovani for your next formal occasion.