Jovani 42257 comes in the following colors: Slate Blue. $590 is the Formal Approach best price guarantee for style 42257 by Jovani. Shop with confidence, Formal Approach is an authorized Jovani prom dress store. We only offer authentic designer prom dresses. Jovani 42257 is available in the following sizes: 000,00,0,2,4,6,8,10,12,14,16,18.