Bruce Willis has become a father again after his fourth daughter was born on Sunday.

The Hollywood action man, who has three grown-up girls from his marriage to Demi Moore, welcomed a baby daughter called Mabel Ray with his second wife Emma Heming.

The actor's representative confirmed the happy news to ET Online.

Heming, 33, gave birth to the baby in Los Angeles and the tot weighted in a nine pounds, one ounce.

Willis, 57, who married Heming in 2009, is also dad to 23-year-old Rumer, 20-year-old Scout and 18-year-old Tallulah, with his ex-wife Moore.