She went on to write the best-selling book, "What to Expect When You're Expecting". The book is currently in its fourth edition and has sold 17 million copies worldwide. The success of the first guide spawned three best-selling sequels. These include – "What to Eat When You're Expecting", "What to Expect Before You're Expecting", and "What to Expect: The Second Year". There is also a series of "What to Expect" books for preschoolers. There is now a "What to Expect" online community with a pregnancy tracker and a baby name finder, among other applications, as well as the What to Expect Foundation, which supports prenatal care for underserved populations. Lionsgate Films released a film version of "What to Expect When You're Expecting" in 2012.
