Ashlee Simpson-Wentz and Pete Wentz affirm they are expecting a baby.

Simpson-Wentz, 23, and Fall Out Boy bassist Wentz, 28, exchanged vows earlier this month at Simpson's parents' Los Angeles-area home. Sister Jessica was the maid of honor.

The newlywed pop singer will go by Ashlee Wentz in private and professionally as Ashlee Simpson-Wentz, according to a report posted Wednesday on People.com.

The couple began dating in fall 2006 and announced their engagement April 9.

Simpson-Wentz's latest album, "Bittersweet World," was released last month. It peaked at No. 4 on the Billboard 200 in its first week, and tracks have logged more than 19 million plays on her MySpace page.                                                 

A representative for Simpson-Wentz did not immediately return a call Wednesday seeking comment.

"While many have speculated about this, we wanted to wait until after the first trimester to officially confirm that we are expecting our first child," read a statement Wednesday on Wentz's blog. "This is truly the most joyous time in our lives and we are excited to share the happy news and start our family.", told they People magazine