Rachel Allan 70642 stretch velvet, beading prom dresses are offered in Black Gold, Navy Silver, Purple Silver. $598 is the Formal Approach best price guarantee for style 70642 by Rachel Allan. Shop with confidence, Formal Approach is an authorized Rachel Allan prom dress store. Rachel Allan 70642 is offered in the following sizes: 00, 0, 2, 4, 6, 8, 10, 12.