April and Leslie forever! Aubrey Plaza chats with ET’s Cassie DiLaura about her ‘Parks and Recreation’ reunion at the premiere of ‘Agatha All Along,’ premiering Sept. 18 on Disney+. The actress reacts to Pawnee pals Amy Poehler and Adam Scott stepping out to support her and Kathryn Hahn on the purple carpet. Aubrey also elaborates on Patti LuPone’s story about a moment when the Broadway legend thought she accidentally ‘killed’ her co-star.