Chris Rock, Anna Kendrick For Pregnancy Comedy

The cast of What To Expect When You’re Expecting grows.

More cast members have been announced for What To Expect When You’re Expecting, a planned film adaptation of Heidi Murkoff’s best-selling pregnancy guide.

Everbody’s Fine director Kirk Jones’ ensemble comedy already boasts Cameron Diaz and Jennifer Lopez, and now Deadline can reveal who will be joining them.

Comedian Chris Rock is set to play Vic, head of a group of expectant fathers who lectures them on what it’s really like to have a baby and become a father.

Up in the Air Oscar-nominee and Twilight franchise actress Anna Kendrick will play Rosie, who reunites with an old flame and fellow food-truck owner and becomes pregnant.

Model-turned-actress Brooklyn Decker steps from her debut in Just Go With It and starring role in the forthcoming Battleship to play the ‘perky wife of a much older man who sails through her pregnancy with twins, much to the consternation of her friends.’

Whip It writer Shauna Cross polished Murkoff’s initial screenplay into a Love Actually-type ensemble, following five different couples. Filming begins this summer for a May 2012 release.