Her 18th child is due January 1st, 2009.
Michelle Duggar and her husband, Jim Bob, say they're looking forward to the new baby.
The family is featured on a series for Discovery Health network.
The children include two sets of twins. They all live in a 7,000-square-foot home, where the children are home-schooled. All their names start with the letter J.
The show examines the family's life inside the home.
On the Net:
Duggar Family Portrait/www.health.discovery.com
(Copyright 2008 by The Associated Press. All Rights Reserved.)