Rachel Allan 70578 crystal jersey, applique, beading prom dresses are offered in Light Blue, Red, Royal. $738 is the Formal Approach best price guarantee for style 70578 by Rachel Allan. Shop with confidence, Formal Approach is an authorized Rachel Allan prom dress store. Rachel Allan 70578 is offered in the following sizes: 00, 0, 2, 4, 6, 8, 10, 12.