Singer/actress Jennifer Lopez has signed on to star opposite Cameron Diaz in the new film What To Expect When You'Re Expecting.
Lopez, who is currently debating a return to the U.S. hit TV show American Idol as a judge next season, will play Holly, a woman who turns to adoption after facing infertility issues, in the Lionsgate movie adaptation of Heidi Murkoff's bestselling book.
The film is set to hit U.S. theatres in May, 2012, just in time for America's Mother's Day, according to Entertainment Weekly.