Colette CL8420 dresses are offered in Jade, Pink, Periwinkle. $499 is the Formal Approach best price guarantee for style CL8420 by Colette. Shop with confidence, Formal Approach is an authorized Colette prom dress store. Colette CL8420 is offered in sizes: 00, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24.