Jasz Couture 7310 dresses are available in the following colors: Navy $834 is the Formal Approach best price guarantee for style 7310 by Jasz Couture. Shop with confidence, Formal Approach is an authorized Jasz Couture prom dress store. Jasz Couture 7310 comes in the following sizes: 000, 00, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22.