Happy Mother's Day: Woman pregnant with 18th child (AP)

In this Aug. 2, 2007 file photo, Michelle Duggar, left, is surrounded by her children and husband Jim Bob, third from right after the birth of her 17th child in Rogers, Ark. The Duggars announced on Friday, May 9, 2008 that they are expecting their 18th child. (AP Photo/ Beth Hall, File) AP - It's a happy Mother's Day for an Arkansas woman she's pregnant with her 18th child. Michelle Duggar, 41, is due on New Year's Day, and the latest addition will join seven sisters and 10 brothers. There are two sets of twins.