Lionsgate Summit, following in the footsteps of this year's earlier What to Expect When You're Expecting, are moving forward on an adaptation of the self-help book Men Are from Mars, Women Are from Venus, with Reese Witherspoon attached to star.

The film, a romantic comedy, will mark the directorial debut of Bryan Buckley. Deborah Kaplan and Harry Elfont are writing the screenplay, with a narrative that loosely follows the guide to relationships as laid out in John Gray's tome, which rests as the best-selling non-fiction hardcover book of all time (excluding the Bible and Koran).

The plan is to shoot the film in January of 2013, with an early 2014 release date in mind. Bryan Buckley is best known as a commercial director.