"Made of Honor" star Michelle Monaghan has been tapped to star alongside Robert Downey Jr. and Zach Galifianakis in the Todd Phillips-directed comedy.

The 33-year-old actress will play the pregnant wife of a man, to be played by Downey Jr, who races home, hoping to arrive before she delivers their first child. Galifianakis will be the man's mismatched traveling companion.

According to Variety, Phillips will produce through his Green Hat shingle along with Daniel Goldberg. Scott Budnick is executive producing with Downey Jr's wife Susan.

Warner Bros is partnered with Legendary Pictures for the project.