He's looking all grown up!

Jennifer Garner stepped out with son Samuel Affleck, and the four-year-old is looking more and more like his famous dad, Ben Affleck, every day.

The blonde tot was spotted walking with his mom and running errands in Brentwood, Calif.

samuel affleck jennifer garner splash

The duo dropped off Samuel's older sisters, Violet and Seraphina, at school and then headed out shopping at the Brentwood Country Mart on Friday, Dec. 2. The normally private mom — who is often spotted with her kids at farmer's markets and parks — was seen escorting her youngest around town.

Check out more photos of celebrity kids then and now!