Hilary Duff and Luca Share 'Ghost Stories' in Adorable Mother-Son Moment -- See the Pic!

This video is unavailable because we were unable to load a message from our sponsors.

If you are using ad-blocking software, please disable it and reload the page.

Hilary Duff's son looks like quite the little storyteller.

The 28-year-old actress snapped a selfie with 4-year-old Luca, and captioned the pic: "Ghost stories." Based on their facial expressions, this is a pretty good tale.

Luca is looking more and more like his mother, who's flawless in this makeup-free, bikini-clad selfie. Hilary also shared a cute photo of herself soaking up the sun earlier that day, and was rocking some stylish summer accessories.

WATCH: Hilary Duff’s Son Luca Makes the Cutest Ghostbusters Fan Ever

When ET sat down with Duff and her sister, Haylie, last year, they revealed that they're both open to having more children. "I mean, we loved growing up with a sibling," Haylie said. "So, you know, I hope that we get siblings and more babies in our family for sure."

Hilary added, "We'd still like to do it together at some point. Try to time that out right."

EXCLUSIVE: Hilary and Haylie Duff's Advice to Kendall and Kylie Jenner on Navigating the Ups and Downs of Fame