Rachel Bilson has signed on to costar in the indie comedy BFF and Baby with Krysten Ritter and Kate Bosworth.  Per Variety, the "film revolves around two best friends who fight to maintain normalcy in their lives after Ritter's character gets pregnant and has a baby."  Ritter co-wrote the script with director Kat Coiro who's making her feature debut on the picture.  Shooting is slated to begin on October 19th in Los Angeles.

Earlier today, we reported that Bilson would star in a new series from The O.C. creator Josh Schwartz.  NBC picked up the pilot production deal for the show which centers on a young woman who can talk to the dead.