Rachel Allan 70659 sequin, feathers prom dresses are offered in Champagne, Light Blue, Lilac. $598 is the Formal Approach best price guarantee for style 70659 by Rachel Allan. Shop with confidence, Formal Approach is an authorized Rachel Allan prom dress store. Rachel Allan 70659 is offered in the following sizes: 00, 0, 2, 4, 6, 8, 10, 12.