"That's right. We are expecting our second child," said Vince when Ellen asked if he had some exciting news to share.
"This is the first time I've said anything," he added. "Yeah, we're very excited."
Kyla, who already has daughter Locklyn, 2, with actor Vince, is due to give birth to the couple's new arrival on 5 August.
After dating Friends actress Jennifer Aniston for between 2005 and 2006 Vince found love with Canadian estate agent Kyla.
Minneapolis-born Vince proposed to Kyla on Valentine's Day, confessing "I figured this is not a ship to be missed because I will not forget this date. So Valentine's Day was the day that I asked her."