Jennifer Garner's Wardrobe Staple: Mama Spanx!

Jennifer Garner holds hands with her daughter Violet on their way to ballet class on Saturday (September 17) in Brentwood, Calif.

The 39-year-old pregnant actress, who recently premiered her new film Butter, shared how she’s been getting red carpet ready with her baby bump.

“You just wear Mama Spanx instead of regular Spanx, and you just try to find something that you can wear,” she told ET Canada. “That’s it. Other than that, it’s all the same.”

15+ pictures inside of Jennifer Garner and Violet heading to ballet class..