'He's here!' Alec, Hilaria Baldwin welcome baby boy

Alec Baldwin and Hilaria Baldwin have welcomed their fourth child, a baby boy.

The newborn is the couple's third son together.

Hilaria took to social media to make the announcement as she shared with the world an adorable image of the new parents with their little bundle of joy.

"He's here! He's perfect! 8lbs 2oz #wegotthis2018," she captioned the Instagram post.

The baby joins big sister Carmen, 4, and older brothers Rafael, 2, and Leonardo, 1.

Alec is also father to 22-year-old Ireland, whom he shares with ex-wife Kim Basinger.