Shelley starred as Billie Dawn in the Pennsylvania Stage Co.'s production of Born Yesterday back in 1982. From the clipping, we can see that the play ran from September 29 to October 24 of that year and was presented at the J.I. Rodale Theater in Allentown. After her Charlie's Angels stint, Shelley went on to tackle stage and received critical acclaim in the process, especially in Born Yesterday.
A quote from The Morning Call's Sylvia Lawler's article about Shelley in 1986:
That she acquitted herself endearingly enough in "Born Yesterday" came as something of a surprise to a lot of people. She projected "a touching and engaging innocence," The Call reviewer had written. Clearly, if Hack had come to these regional hustings to learn her craft and shake that model-turned-actress image, she had done some good for herself.