Ashlee Simpson reportedly told guests at her wedding she is pregnant.

The ‘Outta My Head’ singer – who wed Fall Out Boy rocker Pete Wentz in a ceremony at her parents’ home on Saturday (05.17.08) – confirmed to friends and family she is expecting her first child.

A source said: “At the wedding reception, Ashlee told guests, ‘I’m pregnant.’ ”

Rumors have been rife Ashlee is pregnant ever since she and Pete announced their engagement last month.

However, the couple refused to comment on the reports.

Ashlee and Pete were pronounced husband and wife by Ashlee's former Baptist minister father Joe in a non-denominational ceremony.

A spokesperson for the newlyweds said: "We are delighted to confirm that Pete and Ashlee were married in front of family and close friends."

After tying the knot, Pete and Ashlee celebrated with an 'Alice in Wonderland' themed reception party, which included a wedding cake inspired by the classic children's book.

The sweet treat was adorned with a top hat, stop watch, tea pot and a pot of flowers.