Rachel Allan 70689 taffeta prom dresses are offered in Candy Pink, Red, Sage. $458 is the Formal Approach best price guarantee for style 70689 by Rachel Allan. Shop with confidence, Formal Approach is an authorized Rachel Allan prom dress store. Rachel Allan 70689 is offered in the following sizes: 00, 0, 2, 4, 6, 8, 10, 12.