Jennifer Garner Celebrates 44th Birthday Attending Church, Partying With a Marching Band

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The Garner-Affleck family loves to throw a birthday party!
First it was Samuel's fourth b-day -- where Ben Affleck dressed as Batman for his son -- and now, Jennifer Garner threw quite the bash to celebrate turning 44 on Sunday, even recruiting a marching band for the occasion.
The Alias actress' day started off far more low-key though, attending church with her three children -- Violet, 10, Seraphina, 7, and Sam -- before Affleck took the kids to lunch.
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The shindig took place at Garner's home with 30 of her closest friends and family gathering on the patio to toast the birthday girl, a source tells ET. There was a bar decked out with her initials and tons of flowers and balloons.
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The best part? She hired a marching band to perform during the party!
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Fun fact: Garner played saxophone in her school's marching band -- and recently showed off her "Mary Had a Little Lamb" skills.
As for the church outing, the Miracles From Heaven star previously opened up to ET about her own "miracle" that returned her to her faith.
"I grew up going to church every Sunday," she told ET's Cameron Mathison. "Doing this film and being around people where church was normal, more normal than it is in Los Angeles, it kind of just made me think, 'I've got to get on this.' So, I talked to my kids, and they said, "Of course, we're ready to go.'"
Find out what else she had to say in the video below.