A ton of celebrities, along with the children, attended the 3rd Annual Kidstock Music and Art Festival at Greystone Mansion this afternoon in Beverly Hills.

Some of those attendees pictured below are:

• Ali Landry and daughter Estela
• Elisabeth Rohm and daughter Easton
• Giada De Laurentiis and her daughter Jade
• Poppy Montgomery and her son Jackson
• Breckin Meyer and daughter Caitlin
• Nicole Richie
• Slash and sons Cash (L) and London (R)