Gwen Stefani at Milk and Bookies Pictures

Yesterday morning, stars and their families came out to support the third annual Milk and Bookies event at the Skirball Cultural Center in LA. Chris Pine, Gwen Stefani, Julie Bowen, and Eric Stonestreet were among the celebrities who lent their voices to the cause by sharing some of their favorite children's stories with the kids. The nonprofit, which focuses on promoting philanthropy at a young age through book donations, got going bright and early and offered a fun-filled day with no shortage of milk, cookies, and — of course — tons of reading.

Gwen's son Kingston walked the carpet with her, while Zuma was a little camera shy. Julie Bowen balanced her sons John and Gus while her third boy, Oliver, wasted no time heading into the action. New Girl's Max Greenfield also brought his 3-year-old daughter out and told us he'd have to hold her back from her crush Chris Pine. Stay tuned for today's PopSugar Rush to catch our interviews from the event!