Only ET is backstage at the iHeart Music Festival with today’s biggest music stars. Then, on the red carpet for “Gabby’s Dollhouse: The Movie” premiere. Plus, only we’re on the set of “On Brand with Jimmy Fallon” with Jimmy and Bozoma Saint John. And, only ET is with Sarah Michelle Gellar. Then, Dwyane Johnson and Emily Blunt on their upcoming film, “The Smashing Machine”.