La Femme 31507 lace tulle prom dresses are offered in Dark Emerald, Dusty Mauve, Red. $518 is the Formal Approach best price guarantee for style 31507 by La Femme. Shop with confidence, Formal Approach is an authorized La Femme prom dress store. La Femme 31507 is offered in the following sizes: 00, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20.