Mark Wahlberg and Rhea Durham

Baby No. 4 will be a girl for Mark Wahlberg and his wife, Rhea Durham.

"I'm having another girl," he tells People. "So I'll have two girls and two boys." 

Mark Wahlberg ties the knot

Wahlberg and Durham, a model, are already parents to Ella, 6, Michael, 3, and Brendan, 1. And while his wife is "allowed to pick the magic number" of children, Wahlberg — the youngest of nine — thinks four is enough for their expanding clan.

"We were all raised with a lot of love. But we didn't get the kind of attention I think that we all needed. My parents had to provide to put food on the table," he says. "My mission in life is to raise my kids right. With all the success I've had in the world, if I fail at that, my life means nothing."