Hollywood couple Ben Affleck and Jennifer Garner are expecting their second child, confirms actor Victor Garber.

Earlier this month, reports surfaced the actress was pregnant - but Affleck's spokesperson refused to confirm or deny the reports.

But now Garner's former Alias co-star Garber - who officiated the couple's 2005 wedding - has confirmed the news, insisting, "Yes, she is".

And a source tells Usmagazine.com that Garner is already five months into her pregnancy.

The insider adds, "She and Ben are still deciding whether they'll ask the sex of the child."

The pair welcomed daughter Violet in December 2005.