By Breaking Celebrity News Staff

Jennifer Garner took her adorable son Samuel out with her Friday as she ran some errands in L.A.'s Brentwood neighborhood.

The nine-month old was dressed in a star-studded onesie with mismatched socks.

Earlier in the day, Jen was out for coffee with husband Ben Affleck, and later she took her daughters to a dance class.

No wonder she's in such great shape!

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