Here’s one thing you can expect from Jennifer Lopez and Cameron Diaz when they appear together for the first time on the silver screen: chuckles galore!

The 42-year-old Puerto Rican singer/actress and the 39-year-old Cuban-American actress star in the highly anticipated, highly hormonal film, What To Expect When You’re Expecting.

Adapted from the popular self-help book of the same name, the comedy focuses on five couples whose intertwined lives are turned upside down by the challenges of impending parenthood.

After watching the film’s trailer, which just hit the web, there’s no doubt you’ll experience plenty of laughs!

Along with Lopez and Diaz, the movie also stars Anna Kendrick, Brooklyn Decker, Chace Crawford, Dennis Quaid, Rodrigo Santoro, Joe Manganiello, Matthew Morrison, Chris Rock and Megan Mullally.

The movie’s due date: May 11, 2012.