The 49-year-old actress couldn't wipe the giant grin off her face when she was caught by paparazzi soaking up the fresh air on Friday while walking around her ritzy neighborhood of Brentwood in Los Angeles, CA.
Garner kept it casual for her solo stroll, nearly one week after being seen with Miller for the first time since they reportedly reconciled.
Wearing black sweats, a tank top, and sneakers, the mom of three held a coffee cup in one hand while tracking her steps with an Apple Watch on the other.
Sporting her dark hair up in a ponytail, Affleck's ex-wife went makeup-free for the outing and kept her mask handy.
Keeping her distance from shutterbugs, Garner looked like she was on cloud nine after spending Sunday in Manhattan with the attorney-turned-CEO.
Showcasing her pearly whites, the 13 Going on 30 actress proved Affleck isn't the only one moving on after their divorce.
While her ex-husband celebrated his birthday on Sunday with their three kids — Violet, 15, Seraphina, 12, and Samuel, 9 — Garner was busy in the Big Apple confirming her romance with Miller.
The duo was spotted for the first time in months, strolling around New York City before entering an apartment building together.
Based on Garner's reaction ahead of the weekend, it appears their reconciliation went well.
Garner was first linked to the 43-year-old entrepreneur in May 2018. They reportedly ended their relationship in March 2020 "before LA went into lockdown."
It now appears the two are back on — just like Affleck and his on-again girlfriend Jennifer Lopez.
The Justice League actor was first spotted sneaking out of J Lo's home in April — the same month she ended her engagement to Alex Rodriguez.
Affleck and the singer made their love known in with a PDA tour in Europe, only to come back to the U.S. to continue where they left off.