Jennifer Lopez Opts for Plan B

The actress-singer may have just given birth, but she's all in favor of Plan B

Jennifer Lopez may have just given birth, but she's all in favor of Plan B.

After taking time off her busy film career to play mama to fraternal twins Emme and Max (born last February), the A-lister has signed on to topline a fertility-themed romantic comedy for CBS Films.

Per Variety, Lopez will play a single woman who, unlucky in love, resorts to artificial insemination to have a child only to wind up falling for Mr. Right on the day she learns she's pregnant.

Plan B, written by Kate Angelo, is slated to start shooting in April or May. Also in the pipeline for 2009, J.Lo is attached to star in The Governess, playing a thief who poses as a nanny to a wealthy widower in order to pull off the job of a lifetime.

In other big casting news:

• Hot off her holiday hit, Four Christmases, Reese Witherspoon has come aboard to play the lead in an untitled comedy from As Good As It Gets director James L. Brooks. The plot is being kept tightly under wraps but the flick is supposedly an ensemble along the lines of the helmer's earlier classics, Broadcast News and Terms of Endearment. Lensing starts in March.

• Harrison Ford attached to star in Paramount's Morning Glory, a comedy directed by Roger Michell about an aspiring news producer who aims to save a morning TV show that's being derailed by its feuding anchors, one of which will be played by Ford. Rachel McAdams is in talks to essay the role of the producer.

• House regular Olivia Wilde has been tapped for the female lead in Disney's Tron sequel, dubbed TR2N, which will also see Jeff Bridges back in the role he originated in the 1982 original. The flick hits theaters in 2011.

• Cheech and Chong are getting animated. Big Vision Entertainment has acquired the rights to the stoned comedy duo's library and plans to make Cheech & Chong's Smokin' Animated Movie, a feature-length 'toon comprising some of their more memorable routines. Cheech and Chong are currently in the middle of a stand-up reunion tour, Cheech & Chong Light Up America.

• Actress Brittany Robertson is set to star in Light Years, a family dramedy helmed by Gary Fleder about an adopted 15-year-old girl (Robertson) who tracks down and reconnects with her birth parents, a morning radio-show host for a mother and an immature bar owner father.