The 48-year-old two-time Emmy winner will join Samantha Mathis, Alex Karpovsky and Logan Miller and Jim Gaffigan, reported Deadline.
The film centers around Frank played by Gaffigan, who is a seemingly normal father of a loving family. However, his home life is turned upside down when his 17-year-old son, Phillip (Miller) discovers that his dad has a second family.
Gunn will play Laura, Frank's first wife with Mathis playing the role of the second wife, Bonnie.
Currently in production, "You Can Choose Your Family" has been developed by Bailey from Glen Lakin's script.
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