US television personality and author Martha Stewart is to play herself in an upcoming episode of the sitcom \"2 Broke Girls,\" CBS announced. Stewart\'s guest spot is slated to air May 7, the network said. \"In the episode, Max and Caroline plan to attend a big fashion gala at the Metropolitan Museum of Art where Martha is scheduled to be a guest, in an attempt to have her taste their cupcakes and get her seal of approval,\" a synopsis released Monday said. Kat Dennings and Beth Behrs play Max and Caroline, respectively.