The series, which was based on the book of the same name by Liane Moriarty, was executive produced by and starred Nicole Kidman and Witherspoon.
Moriarty recently revealed there have been talks about a second season.
"Yeah, Nicole and I just spoke about it three days ago. We're talking to Liane Moriarty, who wrote the book, about how could these characters go on, what would happen? We definitely left it open-ended so there's a possibility there," Witherspoon said.
The 41-year-old actress previously told fans that a sequel would rely on whether Moriarty would return to the characters.