Fitness entrepreneur and co-host of the "Mom Brain" podcast, Hilaria Baldwin welcomed her fifth child, a son, with husband Alec Baldwin on Tuesday, September 8.

The couple have now officially introduced their son to the World as well as his name. 

Hilaria and Alec Baldwin took to their respective Instagram account to share a similar photo of their son, and revealed they have named him, Eduardo Pau Lucas. 

The Spanish-born beauty and the 62-year-old Hunt For Red October actor already have daughter Carmen, seven, and sons Rafael, five, Leonardo, three, and Romeo, two. 

Alec is also a father to daughter Ireland, 24, whom he shares with ex-wife Kim Basinger.