Rachel Allan 70490 tulle prom dresses are offered in Light Blue, Light Pink, Lilac. $598 is the Formal Approach best price guarantee for style 70490 by Rachel Allan. Shop with confidence, Formal Approach is an authorized Rachel Allan prom dress store. Rachel Allan 70490 is offered in the following sizes: 00, 0, 2, 4, 6, 8, 10, 12.