La Femme 31170 jersey prom dresses are offered in Dark Berry, Mauve, Navy. $338 is the Formal Approach best price guarantee for style 31170 by La Femme. Shop with confidence, Formal Approach is an authorized La Femme prom dress store. La Femme 31170 is offered in the following sizes: 00, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20.