TV Alert: Watch the Duggars Welcome Baby No. 18!
12/04/2008 AT 12:55 PM EST
The Tontitown, Ark., family, whose show 17 Kids and Counting airs on TLC, are inviting the network's cameras to capture their next child's grand entrance in January.
Michelle and Jim Bob, who are part of the evangelical Christian movement called Quiverful, currently have seven girls and 10 boys – and plan to continue to expand their family.
"Our goal is for each one of our children to be best friends," Jim Bob told the Associated Press. "And everybody working together to serve each other makes that happen."