The Dukes of Hazzard actress uploaded a black and white shot of little Ace to Twitter over the weekend, adding the caption: "My snuggle bug."
Jessica took the picture while pushing Ace on a swing set. It's almost like the sort of photo you'd see in a children's clothing catalogue, isn't it?!
The blonde star and fiancé Eric Johnson became second-time parents in June when Jessica gave birth to Ace Knute Johnson. They are already parents to daughter Maxwell, one.
Jessica and Eric have been engaged since 2010 and actually planned two weddings, only for both to be scrapped after Jessica fell pregnant.
However, it seems 2014 will be the year the couple tie the knot, as Jessica reveals in her new Weight Watchers promo that she's in full wedding planning mode (again).
"The new year will definitely bring on the wedding bells, which is exciting," she says. "I think it's about time. Knowing that I have the wedding coming up is an incentive to stay on Weight Watchers, count my points and stay in the gym.
"I mean, when you see my dress, you'll know."
Jessica, 33, recently spoke with USA Today about her gown, saying: "I've been pulling all kinds of sketches for dresses and colours. It's a good goal for me. It's good for me to feel the best I've ever felt when I walk down the aisle.
"I'm the luckiest girl in the world to have Eric with me and by my side, and he's an unbelievable dad."