Expect the Unexpected in 'What to Expect' Trailer

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It's known as the "bible of American pregnancy," and now the best-seller What to Expect When You're Expecting is a big-screen movie starring Jennifer Lopez, Cameron Diaz and Chris Rock alongside an all-star cast. Watch the fun trailer!
Inspired by the well-known New York Times bestselling pregnancy manual, What to Expect When You're Expecting chronicles the hilarious and heartwarming stories of five couples who face the many challenges adjusting to pregnancy and parenthood.
Elizabeth Banks, Chace Crawford, Brooklyn Decker, Anna Kendrick, Matthew Morrison, Dennis Quaid, Rodrigo Santoro, Ben Falcone and Joe Manganiello round out the cast.
What to Expect When You're Expecting opens in theaters everywhere on May 11, 2012 -- just in time for Mother's Day.