Exclusive: Liza Koshy (A Family Affair) has closed a deal to star opposite Ariana DeBose, Amanda Seyfried, Megan Stalter and Chloe Fineman in My Ex-Friend’s Wedding, the new comedy from director Kay Cannon (Blockers) that Sony picked up in March, in a competitive situation.

The film from indie studio Sister watches as four childhood best friends get a drunken voicemail from their former best friend on the eve of her wedding day — confessing that she thinks she’s making a mistake — then setting out to stop her wedding and rekindle the friendship they once shared. Details as to Koshy’s role are under wraps.

Sister acquired the spec script for My Ex-Friend’s Wedding following the project’s development by production and management company, Circle of Confusion. Taylor Jenkins Reid (Daisy Jones & The Six) and Ashley Rodger wrote the script, with Cannon handling revisions. Producers include Sister Co-Founder and Global CEO Stacey Snider,...