Colette CL8550 dresses are offered in Dusty Blue. $599 is the Formal Approach best price guarantee for style CL8550 by Colette. Shop with confidence, Formal Approach is an authorized Colette prom dress store. Colette CL8550 is offered in sizes: 00, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24.