LOS ANGELES, California (X17online) - According to OK! Magazine and Us Weekly, Ashlee Simpson, 23, is pregnant with her rocker boyfriend Pete Wentz's baby.

Simpson and Wentz, 28, announced their engagement Wednesday (April 9, 2008).

"We are thrilled to confirm their engagement and congratulate this happy couple," Rhett Usry told X17online. "Beyond that there is nothing to say."

Wentz, of the alternative band Fall Out Boy, have been dating since 2006.