Rumer, Scout and Tallulah Willis are about to have a much younger sibling!
Married since spring 2009, the Die Hard actor, 56, and designer-model, 35, are "overjoyed with this news and they look forward to welcoming this newest addition into their family," the rep adds in a statement.
Willis, of course, already has three daughters with first wife Demi Moore: Rumer, 23, Scout, 20, and Tallulah, 17.
A few months after their March 2009 wedding in the Turks and Caicos Islands, Willis told Us Weekly he wasn't sure about becoming a dad for the fourth time. "It's been suggested we begin breeding immediately," Willis joked. "[But we're taking it] just a day at a time. Really slowly."
The star also gushed to W magazine about his stunning bride. "I hear so many people in relationships say, 'I just need a couple of days away, or even an hour away,'" Willis said. "But I don’t want to be away from Emma at all. It's the most singular relationship I've ever had in my life."
His ex-wife Moore, 48, is currently riding out some rocky days with Ashton Kutcher, her second husband of six years. Moore and Willis have remained on amicable terms since their divorce in 2000.