Buy Jovani Prom Dresses and Jovani Evening Gowns. Jovani collections are of exquisite quality and designs, Jovani Prom Collection has over 300 styles to select from, Jovani is located in New York City in the Heart of the Fashion District. Jovani is the No.1 Go do designer for Pageants and many Pageant winners were wearing Jovani Gowns.