Rachel Allan 70780 stretch satin jersey, beading prom dresses are offered in Black, Fuchsia, Rose Gold. $498 is the Formal Approach best price guarantee for style 70780 by Rachel Allan. Shop with confidence, Formal Approach is an authorized Rachel Allan prom dress store. Rachel Allan 70780 is offered in the following sizes: 00, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20.