Rachel Allan 50290 chiffon, crystal beading prom dresses are offered in Periwinkle Multi, Yellow Multi. $998 is the Formal Approach best price guarantee for style 50290 by Rachel Allan. Shop with confidence, Formal Approach is an authorized Rachel Allan prom dress store. Rachel Allan 50290 is offered in the following sizes: 00, 0, 2, 4, 6, 8, 10, 12.