The couple revealed the good news on the Emmys red carpet

By Karen Mizoguchi
September 17, 2017 11:45 PM

Baby makes four for Jeffrey Dean Morgan and Hilarie Burton!

The couple, who married in 2014, are expecting their second child.

69th Annual Primetime Emmy Awards - Arrivals
Credit: J. Merritt/Getty

The Walking Dead star, 51, revealed the pregnancy news on the Emmy Awards red carpet on Sunday when he adoringly placed his hands on 35-year-old Burton’s baby bump, which was hidden under the billowy detail of her vintage Lanvin gown.

WATCH: See the Best-dressed Stars at the 2017 Emmy Awards Red Carpet

Morgan and Burton, who had a brief stint on Fox’s Lethal Weapon and previously starred on One Tree Hill, are already parents to 7-year-old son Augustus, lovingly nicknamed Gus.

Want all the latest pregnancy and birth announcements, plus celebrity mom blogs? Click here to get those and more in the PEOPLE Babies newsletter.

The parents-to-be frequently share family moments on social media with Gus starring front and center.

Most recently, Morgan posted a sweet father-son bonding session from The Walking Dead set.