Josh Brolin Expecting First Child With Wife Kathryn

Josh Brolin is growing his family!

On Tuesday, May 29, 2018, the Deadpool 2 star took to Instagram to announce that he and wife Kathryn Brolin are expecting their first child together — and it's a girl! Posting a photo of Kathryn showing off her baby bump while wearing athletic gear, Josh wrote, "There's a new sheriff in town, and she's no bigger than a sweet potato. Hang on to your hats."

The 50-year-old added the hashtags, "#jbkbstucktogether #lilbeanterritory #loveisaslovedoes."

A post shared by Josh Brolin (@joshbrolin) on May 29, 2018 at 8:04am PDT

Kathryn also shared news of her pregnancy on her own Instagram account, posting a picture of herself looking down at her exposed baby bump and writing, "Something's cookin... Baby Girl Brolin on the way."

Josh and Kathryn, who used to work as the actor's assistant, married in September 2016. While their unborn kiddo is their first child together, Josh is already a father to two children, 28-year-old daughter Eden and 29-year-old son Trevor, from his marriage to Alice Adair. Josh was also previously married to actress Diane Lane from 2004 to 2013.

Congratulations to the happy couple!