Bruce Willis is now a father-of-five.
The 59-year-old's spouse Emma Heming gave birth to their second child together, daughter Evelyn Penn, on Monday.
The newborn weighed 3.8kg, according to E! News.
"Both mother and baby are healthy and doing beautifully," a representative for the couple said.
The Die Hard actor married the 35-year-old in 2009.
They already have one daughter together, two-year-old Mabel Ray.
''[Mabel] is delighted to have a new baby sister,'' the spokesperson added.
Willis is surrounded by females.
He also has three daughters with ex-wife Demi Moore; Rumer Willis, 25, Scout Willis, 22, and Tallulah Willis, 20.
The action movie star divorced from Demi in 2000 after 12 years of marriage.