Colette CL8520 dresses are offered in Black, Lilac, Gold Dust. $439 is the Formal Approach best price guarantee for style CL8520 by Colette. Shop with confidence, Formal Approach is an authorized Colette prom dress store. Colette CL8520 is offered in sizes: 00, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24.