The 43-year-old actress arrived in the city with her kids Violet, Seraphina and Samuel, reported Ace Showbiz.
Garner hit the town to begin filming her new movie "Miracles from Heaven" which is set for release in 2016.
During a break time, the mother of three was photographed still wearing her wedding ring as she's seriously reading what looked like movie script on the movie set.
Garner opted for dark blue short denim dress and braided black leather sandals. She pulled her brunette tresses up into a ponytail while applying minimal makeup on her face.
The couple announced their divorce after ten years of marriage in late June.
Despite the divorce, Garner and Affleck reportedly decided to continue living on the their Brentwood property, though not in the same house. The decision was made as a part of their co-parenting commitment.