Season 34 of Dancing With the Stars is shaping up to be the best yet. The complete cast of celebrities and pros was announced during the Wednesday, September 3, episode of Good Morning America ahead of the September 16 season premiere following a high-energy performance from Jenna Johnson, Derek Hough and more DWTS favorites. The newly revealed celebs join previously announced Robert Irwin as the first cast member for season 34. The wildlife conservationist, 21, will follow in his sister Bindi Irwin's footsteps after she won season 21 with Hough.