The romantic comedy will co-star Michelle Trachtenberg and Maggie Lawson and will also feature Tom Bennett.
Writers are Jackie and Jeff Filgo.
"Save The Date," according to Deadline, centers on "35-year-old and newly single Kate (Lawson), who drunkenly books a wedding venue and now is faced with the task of meeting the right man in time. Trachtenberg will play Hillary, Katie’s buttoned-down, no-nonsense sister who is sharing an apartment with her. Bennett plays Roger, Hillary’s boyfriend of four years. White plays Connie, Katie and Hillary’s mother."