Colette CL8400 dresses are offered in Dusty Lilac Multi, Champagne Multi. $599 is the Formal Approach best price guarantee for style CL8400 by Colette. Shop with confidence, Formal Approach is an authorized Colette prom dress store. Colette CL8400 is offered in sizes: 00, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24.