updated 08/17/2011 AT 4:00 PM ET
•originally published 06/09/2011 AT 6:00 AM ET
Ryan Phillippe played doting dad to kids Ava, 11, and Deacon, 7, at Kidstock Music and Arts Festival, held at a private home in Beverly Hills. The actor seemed very attentive and encouraged his kids to participate in all the activities at the Hudson Jeans-sponsored event. Also there: Real Housewives of Beverly Hills’s Taylor Armstrong, who helped daughter Kennedy and her stepson make healthy homemade soda.