Bittersweet World

Bittersweet World is the third and latest studio album by American singer-songwriter Ashlee Simpson. It was released in the United States on April 22, 2008. The project is her final release through Geffen Records.

The album marked a departure for Simpson, who executive produced the record and shifted her sound in a more dance-pop direction. Wanting to experiment with new sounds to make a "fun party album", she enlisted multiple producers including Timbaland, Jerome Harmon, Chad Hugo of The Neptunes, and Kenna.

Bittersweet World was not as successful as Autobiography or I Am Me. It reached the top 20 in Canada, Ireland, and the United States. While the album's lead single, "Outta My Head (Ay Ya Ya)", also became her first to not appear on the Billboard Hot 100 chart in the US, the song was a moderate success in other territories. In early 2008, Simpson promoted the album with a small club tour. Plans for a summer tour were canceled when she announced her pregnancy. The album has been lauded by critics for its 1980s-infused electropop sound.