Nicole Kidman told Ellen DeGeneres in 2018 that her daughters with husband Keith Urban -- Sunday, 10 and Faith, 8 -- were going to appear in Season 2. With three episodes already out there in the world, Sunday has yet to be spotted, but we've seen Faith in action. She's playing as a classmate of Kidman's onscreen children, Josh and Max (Cameron and Nicholas Crovetti), and has popped up in both Episodes 2 and 3.
In an interview with the Huffington Post, Cameron Crovetti revealed that Faith was sitting next to him in Episode 2. He said the brothers first met Faith and Sunday when Kidman invited the boys to her house before the first season.
Nicholas added, "When Nicole has parties and stuff, she invites us over and we play games with Sunday and Faith."
This also means that Faith's unnamed second-grade character was present for Amabella's closet panic attack, but she has not yet commended on how she feels about climate change. As for Sunday, she is a little bit old to be playing a second grader alongside her sister, but there are still four episodes left of the season and she's bound to pop up somewhere.
Big Little Lies airs Sunday at 9/8c on HBO.