Lori Loughlin pleads not guilty in her response to the college admissions scandal. We have new details. Plus, Ariana Grande's brings out a big surprise at "Coachella." The boy band reunion that brought down the house. Then, inside "Game of Thrones" mania. How did the season premiere episode stack up? And, a new chapter. Brad Pitt and Angelina Jolie are officially single. What's next for them and their kids. Plus, Tiger Woods's stunning "Masters" win! How Hollywood is responding to his comeback. Entertainment Begins and Ends with ET.