The Insider.com

It's yet to be revealed who will take on the coveted roles of Anastasia Steele and Christian Grey in the movie adaptation of 50 Shades of Grey -- but Leona Lewis knows who she would cast!

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A fan of the E.L. James books, Lewis tells MTV News that she thinks country crooner Taylor Swift would be a great fit for the virginal role of Anastasia.

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So, who would she cast as Anastasia's handsome, billionaire boyfriend? "For Christian Grey it has to be someone really hot and super smooth," she tells MTV. :Why am I just thinking of Chris Brown ... maybe Chris Brown!" Is Lewis casting for 50 Shades of Grey the musical?!

Do you think Swift and Brown would work in these kinky roles?