Calista Flockhart took son Liam to the newly opened Dylan's Candy Bar at the Farmers Market at The Grove in Los Angeles on Sunday.
"She wasn't wearing any makeup and looked flawless," an onlooker tells PEOPLE.
Dressed casually in jeans and a loose-fitting floral top, the Brothers & Sisters actress happily watched Liam stock up on treats like Berry Blue Sour Belts and Pucker Powder.
Meanwhile Flockhart made her own small candy bag that included white chocolate-covered pretzel balls.
"She seemed happy and was enjoying watching him have so much fun," the source adds.
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