When Lady Gaga debuted "Applause" live at the MTV Video Music Awards last month, the pop superstar opted to showcase a new wardrobe every few seconds and snicker at standard pop performance conventions. On "Good Morning America" on Monday morning (Sept. 9), Gaga once again blew up the one-outfit-per-performance model and cycled through multiple characters from "The Wizard of Oz," all while the Tin Man, Scarecrow and Cowardly Lion danced beside her.
