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She topped it off with a Santa hat for festive flair

The actress wore the festive look in the 2023 Netflix Christmas film 'Family Switch'

All three stars attended the same event on Friday, Dec. 13 to watch their kids perform

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The exes, who share three kids, also spent Thanksgiving together as a family last month

A source tells PEOPLE Miller spent the night at Garner's house on Thanksgiving, after she spent the day volunteering with ex Ben Affleck and their kids

Garner and Affleck share children Violet, 19, Seraphina, 15, and Samuel, 12

The actress is mom to children Violet, 18, Seraphina, 15, and Samuel, 12

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Jennifer Garner, Dakota Johnson, and Martha Stewart all wear V-neck sweaters

This year marks Lopez's first Thanksgiving since she filed for divorce from Affleck in August after two years of marriage

The former couple and their three children attended the annual event for non-profit The Midnight Mission in Los Angeles

The '13 Going on 30' actress says she used to wear theater makeup for every day

Garner and Ruffalo starred as Jenna Rink and Matt Flamhaff in the 2004 rom-com, while Greer played Jenna's "frienemy" Lucy Wyman

Stay cozy in a stylish winter coat