JOSH BROLIN is a dad for the third time.

The 50-year-old actor and his wife, Kathryn, have welcomed their first child together, a baby girl, he announced on Instagram on Sunday. The couple has decided to name their daughter Westlyn Reign.

The couple announced they were expecting a child together in May. Brolin is already a dad to his two children, 24-year-old Eden and 30-year-old Trevor, from his first marriage to Alice Adair. He was also previously married to actress Diane Lane, though they divorced in 2013 after nine years of marriage.

Kathryn, 31, recently shared a picture of the two kissing, also showing off her sizable baby bump.

Meanwhile, Brolin recently shared a giggling video of the two, in which she jokes that she’s “still huge.”

ET spoke to the actor in June at the “Sicario: Day of the Soldado” premiere, when he said he was definitely excited to be a dad again. (SD-Agencies)