Rachel Allan 70829 stretch tulle, beading, paillettes prom dresses are offered in Lilac Iridescent, Mint Iridescent, Powder Blue Iridescent. $598 is the Formal Approach best price guarantee for style 70829 by Rachel Allan. Shop with confidence, Formal Approach is an authorized Rachel Allan prom dress store. Rachel Allan 70829 is offered in the following sizes: 00, 0, 2, 4, 6, 8, 10, 12.