The 13 Going on 30 actress was photographed on her way to scoop her youngest kiddo after a day at school in Los Angeles, Calif.
The pair were seen walking back to the car together as the doting mom rocked a fall-ready 'fit for the wholesome pics taken on Tuesday, October 19.
The Alias alum shares Samuel, 9, with ex-husband Ben Affleck, along with the former pair's two daughters Violet, 15, and Seraphina, 12.
The former flames were married for over ten years before finalizing their divorce in 2018.
Affleck has since been getting hot-and-heavy with his former fiancée Jennifer Lopez after the pair made headlines for rekindling their romance earlier this year.
The Gone Girl actor was previously engaged to Lopez in the early 2000s before they called things off in 2004.
Meanwhile, Garner has been getting "serious" with on-again boyfriend John Miller.
A source previously revealed that the "committed" pair are "totally set on a long-term future together."
"John and Jen are in similar places in their lives and can relate to raising kids after a divorce," the source dished. "They're on the same page and understand where things stand."
Scroll through the photos below to check out Jennifer Garner's afternoon outing with her son!
The mom-of-three rocked a cozy outfit while going to pick up her youngest child.
She strutted around L.A. in a white floral sweater with brown pants, bright blue socks and fuzzy sherpa slippers.
The Peppermint actress appeared to be taking a phone call while she held hands with her boy after he got out of school.
Luscious locks! The 9-year-old's blonde hair covered his face while he carried his lunch box and walked hand-in-hand with his mama.
Garner's youngster wore a bright red collared shirt with khaki trousers, accessorized with a sweatshirt tied around his waist. His famous mom topped off her look with a pair of sunglasses. The two both added a protective face mask for the outing.