Rachel Allan 70779 stretch satin jersey prom dresses are offered in Blush, Fuchsia, Ocean Blue, Sage, Tangerine, Violet. $798 is the Formal Approach best price guarantee for style 70779 by Rachel Allan. Shop with confidence, Formal Approach is an authorized Rachel Allan prom dress store. Rachel Allan 70779 is offered in the following sizes: 00, 0, 2, 4, 6, 8, 10, 12.