Rachel Allan 70781 crystal satin, 3d flowers prom dresses are offered in Charcoal, Orchid, Powder Blue, Red. $498 is the Formal Approach best price guarantee for style 70781 by Rachel Allan. Shop with confidence, Formal Approach is an authorized Rachel Allan prom dress store. Rachel Allan 70781 is offered in the following sizes: 00, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24.