It appears as though there are no shortage of reasons for Mark Wahlberg and Rhea Durham to celebrate.

Fresh on the heels of their August 1st wedding, Rhea was spotted on Sunday at The Grove in Los Angeles sporting quite the baby bump.

Though no official announcement has been made, a source says the couple are expecting their fourth child.

Already parents to Ella Rae, turning 6 tomorrow, Michael, 3, and Brendan Joseph, 11 ½ months, they have made no secret of their desire for a big family.

Last summer, Mark — 38-year-old executive producer of the HBO smash Entouragejoked that “when the kids are good, we want eight or nine.”

He went on to call life in a full house “hectic…but a lot of fun.”

The actor’s rep did not respond to requests for comment.

Next up for Mark is the Peter Jackson-directed feature film The Lovely Bones opposite Rachel Weisz, in theaters on Dec. 11.

Source: PEOPLE

— Missy