The roles of Cynthia Rose Adams.Stacie Conrad , Lilly Onakuramara and Patricia `` Fat Amy '' Hobart are played by Ester Dean , Alexis Knapp , Hana Mae Lee and Rebel Wilson respectively .
Beca reluctantly auditions by performing `` Cups ( When I 'm Gone ) '' , which impresses Chloe , and joins the Bellas ( despite Aubrey 's blatant disapproval ) with Cynthia Rose Adams , Stacie Conrad , Lilly Onakuramara , and Patricia `` Fat Amy '' Hobart .
Pitch Perfect