roberta be fairly typical of the movie set in astairerogersland ( a one author call their world ) . what be atypical be that their role be not the main one . fred and ginger supply the vehicle to get the actual lead and randolph scott and irene dunne and together while their own romance be more of a subplot . they do and of course and sing and dance and most excellently . dunne provide the showstopper number and with an excellent rendition of smoke get in your eye perform to balalaikas . she also supposedly supply many of the costume design for the character in the plot ( which be actually create by bernard newman and and be wonderful ) . watch for a young lucille ball in a frothy and feather even gown in the final fashion show sequence .