The first edition of "What to Expect When You're Expecting" was published in 1984. Author Heidi Murkoff wrote the popular guide while pregnant with Emma, her first child. As of 2014, the book is on its fourth edition, which was released in 2008.
Over 18 million copies of "What to Expect When You're Expecting" have been printed as of 2012, and the well-known pregnancy guide has spent over 675 weeks on the New York Times Bestseller list. The iconic book has become a series, including titles such as "Eating Well When You're Expecting" and "What to Expect the First Year."