Colette CL5138 dresses are offered in Emerald, Royal Blue. $569 is the Formal Approach best price guarantee for style CL5138 by Colette. Shop with confidence, Formal Approach is an authorized Colette prom dress store. Colette CL5138 is offered in sizes: D0, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24.