What to Expect When You're Expecting, a 500-week bestseller manual, will be turned into a romantic comedy filmed in Georgia, starring Cameron Diaz.

The manual currently ranked 91 on Amazon's Bestseller rank has become the inspiration for Shauna Cross to write a new screenplay about five expecting couples, presented in a similar fashion to Love... Actually (2003), and will join the array of movies filmed in Georgia including blockbusters like Forrest Gump, Zombieland, and The Blind Side.

Ironic to the comedic essense of the soon-to-be-produced film, What to Expect When You're Expecting received much negative criticism for its potent ability to increase the paranoia of first-time pregnant women. Of the most helpful reviews for the manual, as listed on Amazon, the top three are negative reviews rated with the lowest rating. What to Expect When You're Expecting is part of a series of 13 books by Heidi Murkoff.

Cameron Diaz is the only certain cast to the film. She was cast in The Green Hornet earlier this year, the upcoming sexual comedy Bad Teacher (in theaters June 24), and  in Gambit, coming to theaters in 2012.