Rachel Allan 70770 stretch tulle, hologram beading prom dresses are offered in Emerald, Ocean Blue Multi, Powder Blue, Purple, Tangerine. $658 is the Formal Approach best price guarantee for style 70770 by Rachel Allan. Shop with confidence, Formal Approach is an authorized Rachel Allan prom dress store. Rachel Allan 70770 is offered in the following sizes: 00, 0, 2, 4, 6, 8, 10, 12.