The wedding of Nick Jonas and Priyanka Chopra before they say I-do! From the elaborate guest gifts to the fashions, why their wedding will be one of the biggest celebrity ceremonies ever! Then, Bradley Cooper is honored at the 32nd American Cinematheque Award! His past co-stars Lady Gaga and Jennifer Garner reflect on their time with him! Plus, date night at the premiere of "Mary Poppins Returns" with Emily Blunt and John Krasinski! And, behind the scenes of the most epic new music video full of girl power movie tributes from Ariana Grande! Plus, Garth Brooks exclusive before his historic concert! Entertainment Begins and Ends with ET!