Bittersweet World is the third studio album by American recording artist Ashlee Simpson. It was first released in Australia on April 19, 2008, with a release in the United States following on April 22. The project serves as her third and final release through Geffen Records. Simpson first spoke of a third album following her run as Roxie Hart in the musical Chicago in 2006. Work on the project officially began in 2007, with Geffen announcing an October release date.