Jasz Couture is a designer of Prom, Pageant, and Eveningwear. Jasz has been designing stunningly sexy affordable gowns for over three decades Jasz couture glamorous gowns have been worn in many Pageants, Proms and by several celebrities. Jasz Couture 2021 Prom Dresses. Jasz Couture gowns are stunningly sexy and brilliantly beautiful. Jasz Couture dresses are sexy, unique and stylish looking our fashionable customers have come to expect only the best!