On June 10, 2015, a third film was officially confirmed, and Kay Cannon was set to return to write the script. On June 15, 2015, it was announced that Kendrick and Wilson would both reprise their roles, and on July 28, 2015, Brittany Snow signed on to return as well. Paul Brooks again produced for Gold Circle Films, along with Banks and Max Handelman for Brownstone Productions. On October 27, 2015, Banks was officially announced to return as director for the film, though she exited in that capacity on June 3, 2016. On September 1, 2016, Trish Sie was confirmed to direct the film. On December 13, 2016, it was reported that Ruby Rose was in talks to join the cast, while Anna Camp signed on to return for the sequel. Cannon wrote the script with later drafts by Mike White and Dana Fox; White would eventually receive screenwriting credits alongside Cannon. On January 5, 2017, a table read occurred, with Ester Dean, Hana Mae Lee, Chrissie Fit, Kelley Jakle, and Shelley Regner also being confirmed to reprise their roles, and singer Andy Allo joining as Charity, a rival in a group opposing the Bellas. While it was revealed by vocal director Deke Sharon that Alexis Knapp would return; on February 6, she posted a photo on Instagram, confirming her return, and was on set the following day, filming a short cameo performance.
