By Breaking Celebrity News Staff

Ben Affleck was on daddy duty this weekend when he took his two daughters to a Santa Monica, Calif. book store.

The Argo star, 40, walked hand-in-hand with Violet, six, and Seraphina, three, as they shopped for reading material at Barnes and Noble.

While his eight-month-old son, Samuel, stayed home with mom Jennifer Garner, Affleck seemed to be enjoying his girly afternoon.

His day hadn't started off quite so well however, after he crashed into a parked car.

Affleck left a note for the owner of the vehicle though, accepting all responsibility for the damage.

"Hi, knocked off your mirror!" his note read. "Very sorry! Will cover everything - Ben."

RELATED STORIES:

Jennifer Garner Jokes She’s A Bad Mom; Asking Brangelina For Parenting Tips!

Jennifer Garner Shows Off Her Ben Affleck Lookalike Son Samuel

Look At Those Lips! Adorable Baby Samuel Runs Errands With Jennifer Garner