(Cover) - EN Showbiz - Bruce Willis is "overjoyed" to be welcoming his fourth daughter.

The Expendables actor and his wife Emma Heming are currently expecting their first child together.

Bruce is elated that his three daughters with ex-wife Demi Moore will soon have a little sister.

"Bruce is going to have another baby girl in his life," a source revealed to Life & Style magazine. "He is overjoyed."

The couple, who announced Emma's pregnancy in October, cannot wait for their little girl to be delivered.

"They're very happy about their new baby coming into the world," the source continued. "Bruce has been doting on Emma and has been very sweet with her."

The action star has spoken previously about how important his children are to him.

"My daughters really rule my emotions, and I would do anything for them," he said.

Bruce and Emma married in 2009.

This will be the pair's first child together.

Bruce has 23-year-old Rumer, 20-year-old Scout and 17-year-old Tallulah with former spouse Demi.

Emma is expected to give birth in spring. (C) Cover Media