June 15, 2010 01:00 PM

Giovanni/Splash News Online

After lunch at Brentwood Country Mart on Saturday, Ben Affleck and Jennifer Garner took their daughters — Violet Anne, 4½, and Seraphina Rose Elizabeth, 17 months — along for a trip to the dentist!

The family of four recently returned from Louisiana, where the actress was shooting Butter — and garnering rave reviews from the locals.

“It’s like clockwork,” a source told PEOPLE of their Starbucks visits, which included lattes for Garner and cookies for her daughters. “Jennifer is super sweet and her girls are too.”

RELATED: Spotted: Jennifer Garner and Her Sweet Seraphina

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