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Former first ladies Barbara Bush, left, and Laura Bush, take part in the Enduring Legacies of America’s First Ladies conference Thursday, Nov. 15, 2012, in Austin, Texas. Family members, former staff members, historians, and White House insiders also spoke as part of the program. (AP Photo/David J. Phillip)

The Bush family

The Bush dynasty boasts two former U.S. presidents (George H.W. and George W.) and a former governor of Florida (Jeb). The newest addition: Jenna Bush Hager announced she is pregnant on Dec. 12, 2012.