The actress, 31, looked slim in a pair of distressed jeans which clung to her hips. Up top, Kunis exposed her flat stomach with a tiny navy Lacoste sweater which revealed part of her abs.
Her fiancé, 37, also dressed casually for the family outing, which included a stop by the Harvest Moon Kitchen in Valley Village.
The actor — who made headlines last Friday after Scott Eastwood's shocking revelation on WWHL — appeared at ease with Kunis and their daughter, who was tucked away in a car seat.
As for how Kunis' secret method for bouncing back after pregnancy? "Breastfeeding is like working out," she told Jimmy Kimmel this past February. "That, and it's true that I am very active. I hike almost every day with [Wyatt]."
The Jupiter Ascending actress also joked with Conan O'Brien how she doesn't "know how to deal" with her post-pregnancy boobs. "I don't know how to deal with them because I've never had them," she mused back in February. "I've always dressed for a flat-chested girl and all of a sudden, I'm busty!"
In order to adapt to her curvier figure, Kunis said she's opted for some support. "First of all: I needed to start wearing bras," she shared. "That was a whole new experience for me." She has also observed that men have been staring at her chest more these days. "I've never had that happen before, but they're just there," she noted.