Colette CL12237 in Tulle, Sequins, Rhinestones. $589 is the Formal Approach best price guarantee for style CL12237 by Colette. Shop with confidence, Formal Approach is an authorized Colette prom dress store. Colette CL12237 comes in the following colors: Silver, Red, and these sizes: 00, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20.