Leonardo DiCaprio and Brad Pitt's big night at the "Once Upon a Time in Hollywood" premiere and the star that turned heads on the red carpet. Plus, breaking couples news: Chris Pratt?s wedding surprise from Katherine. We?ve got the details. Then, Kaley Cuoco gets animated about her first new show after "The Big Bang Theory." And, the brand new project bringing Matt Damon and Ben Affleck together on the big screen. Entertainment Begins and Ends with ET!