We told you last week when Ashlee Simpson and Pete Wentz announced their engagement that we smelled a bun in the oven. Today we got confirmation.

Ashlee Simpson is pregnant, a source confirmed to Usmagazine.com. The singer, 23, is expecting her first child with fiancé Pete Wentz, 28. Simpson and the Fall Out Boy frontman announced their engagement Wednesday. “We are thrilled to confirm their engagement and congratulate this happy couple,” a spokesperson for the couple told Us. “Beyond that there is nothing to say.”