Jennifer Garner and Seraphina Affleck at Park Pictures

Jennifer Garner and Seraphina had an especially smiley park day in LA this afternoon. A very pregnant Jennifer put Seraphina on her shoulders, helped her tackle the monkey bars, and also pushed her daughter on the swings. Big sister Violet didn't join them since she was busy at school, but it looks like the duo had plenty of fun on their own. Jennifer kicked off the week with mom duty following a busy weekend of glamorous events.

She stepped out with her Arthur costar Russell Brand for the Motion Picture & Television Fund's "Reel Stories, Real Lives" at Milk Studios in Hollywood on Saturday and was back on the red carpet for the AFI Fest premiere of Butter yesterday. Jennifer showed off her bump in two different dressy looks for the cameras, though her super-short Sunday night outfit was perhaps the sexiest.