Jennifer Garner: Birthday Bash with the Kids!

Jennifer Garner radiates joy as she leaves the Wildlife Learning Center on Sunday (September 18) in Los Angeles.

The 39-year-old expectant mama took her children Violet and Seraphina to a birthday party at the nature center.

PHOTOS: Check out the latest pics of Jennifer Garner

The day before, Jen took her older daughter Violet to ballet class. Violet looked ready to go in her full pink dance ensemble!

ABC recently bought the television series Cartoon Marriage, which Jennifer is executive producing, according to Deadline. The television show will be based on the lives of married cartoonists Michael Maslin and Liza Donnelly.

FYI: Jen is wearing Citizens of Humanity “Avedon” slick skinny maternity jeans.

20+ pictures inside of Jennifer Garner leaving a birthday party with Violet and Seraphina…