Ashlee Simpson is Little Miss Obsessive

Ashlee Simpson takes time to promote “Little Miss Obsessive,” the second single off her new album Bittersweet World on Monday in New York City.

The 23-year-old singer/actress revealed on TRL that she’s going to shoot the video next month after the tour. She wore an Anne Demeulemeester vest, J Brand jeans and Marc by Marc Jacobs heels.

Later in the day, Ashlee was seen at signing copies of her new CD at the Wal-Mart Farmingdale store in New York. Watch video footage of Ashlee’s appearance at Newsday.com.

And in a recent vlog (video blog) by Fall Out Boy boyfriend Pete Wentz, he admits that he and Ashlee are going to try to have a baby together. Watch the video below!!

Bittersweet World drops in stores nationwide on April 15.

Ashlee Simpson and Pete Wentz Move Onto Baby-making

20+ pictures inside of Little Miss Obsessive Ashlee Simpson…