Colette CL8645 dresses are offered in Lilac, Light Blue, Buttercup. $499 is the Formal Approach best price guarantee for style CL8645 by Colette. Shop with confidence, Formal Approach is an authorized Colette prom dress store. Colette CL8645 is offered in sizes: 00, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24.