Rachel Allan 70798 sequin beading prom dresses are offered in Aqua Iridescent, Pink Iridescent. $838 is the Formal Approach best price guarantee for style 70798 by Rachel Allan. Shop with confidence, Formal Approach is an authorized Rachel Allan prom dress store. Rachel Allan 70798 is offered in the following sizes: 00, 0, 2, 4, 6, 8, 10, 12.